558 + Mcqs in Time and Work in Aptitude Page 10 McqOptions

451.	A can do a certain work in 12 days. B is 60% more efficient than A. How many days will B and A together take to do the same job?
A.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>80</center></td><td rowspan="2">days </td></tr><td align="center">13</td></table>
B.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>70</center></td><td rowspan="2">days </td></tr><td align="center">13</td></table>
C.
D.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>75</center></td><td rowspan="2">days </td></tr><td align="center">13</td></table>
E.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>60</center></td><td rowspan="2">days </td></tr><td align="center">13</td></table>
Answer» E. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>60</center></td><td rowspan="2">days </td></tr><td align="center">13</td></table>

Discussion

452.	A canal of a village can be cleaned by 24 villagers in 12 days. The number of days in which 36 villagers can clean the canal is
A.	18
B.	8
C.	72
D.	16
Answer» C. 72

Discussion

453.	Seventy-five men are employed to lay down a railway line in 3 months. Due to certain emergency conditions, the work was to be finished in 18 days. How many more men should be employed to complete the work in the desired time ?
A.	300
B.	325
C.	350
D.	375
Answer» B. 325

Discussion

454.	A can do a piece of work in 120 days and B can do it in 150 days. They work together for 20 days. Then B leaves and A alone continues the work. 12 days after that C joins A and the work is completed in 48 days more. In how many days can C do it if he works alone?
A.	230 days
B.	225 days
C.	240 days
D.	220 days
Answer» D. 220 days

Discussion

455.	The four walls and ceiling of a room of length 25 m, breadth 12 m and height 10 m are to be painted. Painter A can paint 200 m
A.	6 days
B.
C.	<table><tr><td rowspan="2">6</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>10</center></td><td rowspan="2">days</td></tr><td align="center">33</td></table>
D.	<table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>10</center></td><td rowspan="2">days</td></tr><td align="center">33</td></table>
E.	8 days
Answer» C. <table><tr><td rowspan="2">6</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>10</center></td><td rowspan="2">days</td></tr><td align="center">33</td></table>

Discussion

456.	A and B together can complete a work in 12 days. A alone can complete in 20 days. If B does the work only half a day daily, then in how many days A and B together will complete the work ?
A.	10 days
B.	20 days
C.	11 days
D.	15 days
Answer» E.

Discussion

457.	P is thrice as good a workman as Q and therefore able to finish a job in 48 days less than Q. Working together, they can do it in :
A.	18 days
B.	24 days
C.	30 days
D.	12 days
Answer» B. 24 days

Discussion

458.	A and B together can finish a work in 30 days. They worked on it for 20 days and then B left the work. The remaining work was done by A alone in 20 days more. In how many days can A alone finish the work?
A.	48 days
B.	50 days
C.	54 days
D.	60 days
Answer» E.

Discussion

459.	A and B together can do a piece of work in 36 days, B and C together can do it in 24 days. A and C together can do it in 18 days. The three working together can finish the work in
A.	8 days
B.	16 days
C.	30 days
D.	32 days
Answer» C. 30 days

Discussion

460.	If 7 men working 7 hrs a day for each of 7 days produce 7 units of work, then the units of work produced by 5 men working 5 hrs a day for each of 5 days is
A.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>25 </center></td></tr><td align="center">343</td></table>
B.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>125 </center></td></tr><td align="center">49</td></table>
C.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>49</center></td></tr><td align="center">125</td></table>
D.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>343</center></td></tr><td align="center">25</td></table>
Answer» C. <table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>49</center></td></tr><td align="center">125</td></table>

Discussion

461.	A can complete a work in 10 days, B can complete the same work in 20 days and C in 40 days. A starts working on the first day, B works for second day and C works for third day. Again A works for fourth day and B for fifth day and so on. If they continued working in the same way, in how many days will the work be completed?
A.	15 days
B.	16.5 days
C.	15.5 days
D.	17 days
Answer» C. 15.5 days

Discussion

462.	36 men together can build a wall 140 m long in 21 days. The number of men working at the same rate required to build the same wall in 14 days is
A.	54
B.	48
C.	36
D.	18
Answer» B. 48

Discussion

463.	A and B can do a piece of work in 12 days and 15 days respectively. They began to work together but A left after 4 days. In how many more days would B alone complete the remaining work ?
A.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>20</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">3</td></tr></table>
B.	<table><tr><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>25</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">3</td></tr></table>
C.	6 days
D.	5 days
Answer» D. 5 days

Discussion

464.	To do a certain work, B would take time thrice as long as A and C together and C twice as long as A and B together. The three men together complete the work in 10 days. The time taken by A to complete the work separately is
A.	22 days
B.	24 days
C.	30 days
D.	20 days
Answer» C. 30 days

Discussion

465.	A contractor undertook to finish a certain work in 124 days and employed 120 men. After 64 days, he found that he had already done 2/3 of the work.
A.	48
B.	56
C.	40
D.	50
Answer» C. 40

Discussion

466.	A can complete a work in 24 days, B in 32 days and C in 64 days. They start together. A works for 6 days and leaves and B leaves 6 days before the work is finished. In how many days was the work finished?
A.	20 days
B.	21 days
C.	22 days
D.	25 days
Answer» B. 21 days

Discussion

467.	A can do a piece of work in 6 days. B is 25% more efficient than A. How long would B alone take to finish this work?
A.	<table><tr><td rowspan="2">4</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>4</center></td><td rowspan="2">days </td></tr><td align="center">5</td></table>
B.	<table><tr><td rowspan="2">3</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days </td></tr><td align="center">3</td></table>
C.	<table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days </td></tr><td align="center">4</td></table>
D.	<table><tr><td rowspan="2">2</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">days </td></tr><td align="center">3</td></table>
Answer» B. <table><tr><td rowspan="2">3</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days </td></tr><td align="center">3</td></table>

Discussion

468.	A, B and C can complete a work separately in 24, 36 and 48 days respectively. They started together but C left after 4 days of start and A left 3 days before the completion of work. In how many days will the work be completed?
A.	20 days
B.	18 days
C.	16 days
D.	15 days
Answer» E.

Discussion

469.	Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked 1/3 as efficiently as he actually did, the work would have been completed in 3 days. To complete the job alone, A would require
A.	<table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days </td></tr><td align="center">5</td></table>
B.
C.	<table><tr><td rowspan="2">6</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days </td></tr><td align="center">4</td></table>
D.	<table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days </td></tr><td align="center">2</td></table>
E.	<table><tr><td rowspan="2">8</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>3</center></td><td rowspan="2">days </td></tr><td align="center">4</td></table>
Answer» C. <table><tr><td rowspan="2">6</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days </td></tr><td align="center">4</td></table>

Discussion

470.	A man undertakes to do a certain work in 150 days. He employs 200 men. He finds that only a quarter of the work is done in 50 days. The number of additional men that should be appointed so that the whole work will be finished in time is :
A.	75
B.	100
C.	125
D.	50
Answer» C. 125

Discussion

471.	A can do a piece of work in 8 days and B can do it in 10 days separately. How many days would it take for both A and B to finish the same work together ?
A.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>33</center></td><td rowspan="2"></td></tr><td align="center">8</td></table>
B.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>40</center></td><td rowspan="2"></td></tr><td align="center">9</td></table>
C.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>41</center></td><td rowspan="2"></td></tr><td align="center">10</td></table>
D.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>42</center></td><td rowspan="2"></td></tr><td align="center">11</td></table>
Answer» C. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>41</center></td><td rowspan="2"></td></tr><td align="center">10</td></table>

Discussion

472.	A can do a job in 10 days and B can do the same job in 15 days. They start working together, but B leaves after 5 days. How many more days A want to finish the work ?
A.	2 days
B.	<table><tr><td rowspan="2">1</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">3</td></tr></table>
C.	3 days
D.	<table><tr><td rowspan="2">2</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">3</td></tr></table>
Answer» C. 3 days

Discussion

473.	A and B can do a piece of work in 30 days while B and C can do the same work in 24 days and C and A in 20 days. They all work for 10 days when B and C leave.
A.	16 days
B.	15 days
C.	18 days
D.	20 days
Answer» D. 20 days

Discussion

474.	A canteen requires 56 kg of rice for seven days . The quantity of rice required for the months of April and May together is :
A.	468 kg.
B.	488 kg.
C.	498 kg.
D.	508 kg.
Answer» C. 498 kg.

Discussion

475.	A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in
A.	5 days
B.	7 days
C.	11 days
D.	3 days
Answer» B. 7 days

Discussion

476.	Sunil completes a work in 4 days, whereas Dinesh completes the work in 6 days. Ramesh works
A.	<table><tr><td rowspan="2">1</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>5</center></td><td rowspan="2">days </td></tr><td align="center">12</td></table>
B.	<table><tr><td rowspan="2">1</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>5</center></td><td rowspan="2">days </td></tr><td align="center">7</td></table>
C.	<table><tr><td rowspan="2">1</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>3</center></td><td rowspan="2">days </td></tr><td align="center">8</td></table>
D.	<table><tr><td rowspan="2">1</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>5</center></td><td rowspan="2">days </td></tr><td align="center">19</td></table>
Answer» E.

Discussion

477.	A contractor undertook to finish a work in 92 days and employed 110 men. After 48 days, he found that he had already done 3/5 part of the work, the number of men he can withdraw so that the work may still be finished in time is :
A.	45
B.	40
C.	35
D.	30
Answer» E.

Discussion

478.	12 men can complete a work in 90 days. 30 days after they started work, 2 men left and 8 men joined. How many days will it take to complete the remaining work ?
A.	90 days
B.	60 days
C.	40 days
D.	50 days
Answer» D. 50 days

Discussion

479.	X can do a piece of work in p days and Y can do the same work in q days. Then the number of days in which X and Y can together do that work is
A.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>p + q</center></td><td rowspan="2"></td></tr><td align="center">2</td></table>
B.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">+</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2"></td></tr><tr><td style="text-align: center;">p</td><td style="text-align: center;">q</td></tr></table>
C.
D.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>pq</center></td><td rowspan="2"></td></tr><td align="center">p + q</td></table>
E.	pq
Answer» D. <table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>pq</center></td><td rowspan="2"></td></tr><td align="center">p + q</td></table>

Discussion

480.	A school has 8 periods of 45 minutes each, everyday. How long will each period be if the school has to have 9 periods everyday, assuming the working hours to be the same?
A.	40 minutes
B.	35 minutes
C.	30 minutes
D.	45 minutes
Answer» B. 35 minutes

Discussion

481.	A and B together can do a piece of work in 30 days, B and C together can do it in 20 days. A starts the work and works on it for 5 days, then B takes it up and works for 15 days. Finally C finishes the work in 18 days. In how many days can C do the work when doing it separately?
A.	40 days
B.	24 days
C.	120 days
D.	60 days
Answer» C. 120 days

Discussion

482.	A can do a piece of work in 8 days which B can destroy in 3 days. A has worked for 6 days, during the last 2 of which B has been destroying; how many days must A now work alone to complete the work ?
A.	7 days
B.	<table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">3</td></tr></table>
C.	<table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">3</td></tr></table>
D.	8 days
Answer» C. <table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">3</td></tr></table>

Discussion

483.	Pratibha is thrices as efficient as Sonia and is therefore able to finish a piece of work in 60 days less than Sonia. Pratibha and Sonia can individually complete the work respectively in
A.	30 days, 60 days
B.	60 days, 90 days
C.	30 days, 90 days
D.	40 days, 120 days
Answer» D. 40 days, 120 days

Discussion

484.	3 men and 7 women can do a job in 5 days, while 4 men and 6 women can do it in 4 days. The number of days required for a group of 10 women working together, at the same rate as before, to finish the same job is :
A.	30 days
B.	36 days
C.	40 days
D.	20 days
Answer» E.

Discussion

485.	If 100 cats kill 100 mice in 100 days, then 4 cats would kill 4 mice in how many days?
A.	4 days
B.	3 days
C.	40 days
D.	100 days
Answer» E.

Discussion

486.	X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in:
A.	18 days
B.	27 days
C.	36 days
D.	42 days
Answer» D. 42 days

Discussion

487.	If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days ?
A.	1
B.	7/2
C.	7
D.	49
Answer» D. 49

Discussion

488.	A and B together can finish a work in 15 days. A and C take 2 days more to complete the same work than that of B and C. A, B and C together complete the work in 8 days. In how many days will A finish it separately?
A.	40 days
B.	24 days
C.	<table><tr><td rowspan="2">17</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><td align="center">7</td></table>
D.	20 days
Answer» B. 24 days

Discussion

489.	A can finish a work in 18 days and B can do the same work in 5 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?
A.	6 days
B.	<table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">2</td></tr></table>
C.	5 days
D.	8 days
Answer» B. <table><tr><td rowspan="2">5</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><tr><td style="text-align: center;">2</td></tr></table>

Discussion

490.	If A, B and C can complete a work in 6 days. If A can work twice faster than B and thrice faster than C, then the number of days C alone can complete the work is :
A.	33 days
B.	44 days
C.	22 days
D.	11 days
Answer» B. 44 days

Discussion

491.	Shashi can do a piece of work in 20 days. Tanya is 25% more efficient than Shashi. The number of days taken by Tanya to do the same piece of work is :
A.	15
B.	16
C.	18
D.	25
Answer» C. 18

Discussion

492.	A and B can do a work in 8 days. B alone can do it in 24 days. In how many days, A alone can do the same work?
A.	10 days
B.	9 days
C.	12 days
D.	14 days
Answer» D. 14 days

Discussion

493.	If 10 people can do a job in 20 days, then 20 people with twice the efficiency can do the same job in
A.	5 days
B.	10 days
C.	20 days
D.	40 days
Answer» B. 10 days

Discussion

494.	Either 8 men or 17 women can paint a house in 33 days. The number of days required to paint three such houses by 12 men and 24 women working at the same rate is :
A.	44 days
B.	43 days
C.	34 days
D.	66 days
Answer» D. 66 days

Discussion

495.	12 men and 18 boys working
A.	42
B.	44
C.	46
D.	None of these
Answer» B. 44

Discussion

496.	A and B can do a piece of work in 10 days, B and C in 15 days and C and A in 20 days. C alone can do the work in :
A.	60 days
B.	120 days
C.	80 days
D.	30 days
Answer» C. 80 days

Discussion

497.	A can do a work in 12 days and B can do it in 16 days. A and B started the work jointly and A left 2 days before the work is finished. Find the number of days they took to finish the work.
A.	6 days
B.	7 days
C.	9 days
D.	8 days
Answer» E.

Discussion

498.	A certain number of men can do a work in 40 days. If there were 8 men more, it could be finished in 10 days less. How many men were there initially?
A.	20
B.	24
C.	30
D.	16
Answer» C. 30

Discussion

499.	A alone takes as much time as B and C together take to complete a piece of work. If A and B together take 10 days and B alone takes 50 days to complete it, in what time can A and C together do the work?
A.	<table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><td align="center">2</td></table>
B.	<table><tr><td rowspan="2">7</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><td align="center">7</td></table>
C.	<table><tr><td rowspan="2">8</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><td align="center">7</td></table>
D.	<table><tr><td rowspan="2">15</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><td align="center">7</td></table>
Answer» C. <table><tr><td rowspan="2">8</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">days</td></tr><td align="center">7</td></table>

Discussion

500.	A and B can complete a piece of work in 45 and 40 days respectively. Both started to work together, but after some days A left and B alone completed the rest work in 23 days. For how many days did A work?
A.	12 days
B.	10 days
C.	8 days
D.	9 days
Answer» E.

Discussion

Explore topic-wise MCQs in Aptitude.

A can do a certain work in 12 days. B is 60% more efficient than A. How many days will B and A together take to do the same job?

A canal of a village can be cleaned by 24 villagers in 12 days. The number of days in which 36 villagers can clean the canal is

Seventy-five men are employed to lay down a railway line in 3 months. Due to certain emergency conditions, the work was to be finished in 18 days. How many more men should be employed to complete the work in the desired time ?

A can do a piece of work in 120 days and B can do it in 150 days. They work together for 20 days. Then B leaves and A alone continues the work. 12 days after that C joins A and the work is completed in 48 days more. In how many days can C do it if he works alone?

The four walls and ceiling of a room of length 25 m, breadth 12 m and height 10 m are to be painted. Painter A can paint 200 m

A and B together can complete a work in 12 days. A alone can complete in 20 days. If B does the work only half a day daily, then in how many days A and B together will complete the work ?

P is thrice as good a workman as Q and therefore able to finish a job in 48 days less than Q. Working together, they can do it in :

A and B together can finish a work in 30 days. They worked on it for 20 days and then B left the work. The remaining work was done by A alone in 20 days more. In how many days can A alone finish the work?

A and B together can do a piece of work in 36 days, B and C together can do it in 24 days. A and C together can do it in 18 days. The three working together can finish the work in

If 7 men working 7 hrs a day for each of 7 days produce 7 units of work, then the units of work produced by 5 men working 5 hrs a day for each of 5 days is

36 men together can build a wall 140 m long in 21 days. The number of men working at the same rate required to build the same wall in 14 days is

A and B can do a piece of work in 12 days and 15 days respectively. They began to work together but A left after 4 days. In how many more days would B alone complete the remaining work ?

To do a certain work, B would take time thrice as long as A and C together and C twice as long as A and B together. The three men together complete the work in 10 days. The time taken by A to complete the work separately is

A contractor undertook to finish a certain work in 124 days and employed 120 men. After 64 days, he found that he had already done 2/3 of the work.

A can complete a work in 24 days, B in 32 days and C in 64 days. They start together. A works for 6 days and leaves and B leaves 6 days before the work is finished. In how many days was the work finished?

A can do a piece of work in 6 days. B is 25% more efficient than A. How long would B alone take to finish this work?

A, B and C can complete a work separately in 24, 36 and 48 days respectively. They started together but C left after 4 days of start and A left 3 days before the completion of work. In how many days will the work be completed?

Two workers A and B working together completed a job in 5 days. If A worked twice as efficiently as he actually did and B worked 1/3 as efficiently as he actually did, the work would have been completed in 3 days. To complete the job alone, A would require

A man undertakes to do a certain work in 150 days. He employs 200 men. He finds that only a quarter of the work is done in 50 days. The number of additional men that should be appointed so that the whole work will be finished in time is :

A can do a piece of work in 8 days and B can do it in 10 days separately. How many days would it take for both A and B to finish the same work together ?

A can do a job in 10 days and B can do the same job in 15 days. They start working together, but B leaves after 5 days. How many more days A want to finish the work ?

A and B can do a piece of work in 30 days while B and C can do the same work in 24 days and C and A in 20 days. They all work for 10 days when B and C leave.

A canteen requires 56 kg of rice for seven days . The quantity of rice required for the months of April and May together is :

A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in

Sunil completes a work in 4 days, whereas Dinesh completes the work in 6 days. Ramesh works

A contractor undertook to finish a work in 92 days and employed 110 men. After 48 days, he found that he had already done 3/5 part of the work, the number of men he can withdraw so that the work may still be finished in time is :

12 men can complete a work in 90 days. 30 days after they started work, 2 men left and 8 men joined. How many days will it take to complete the remaining work ?

X can do a piece of work in p days and Y can do the same work in q days. Then the number of days in which X and Y can together do that work is

A school has 8 periods of 45 minutes each, everyday. How long will each period be if the school has to have 9 periods everyday, assuming the working hours to be the same?

A and B together can do a piece of work in 30 days, B and C together can do it in 20 days. A starts the work and works on it for 5 days, then B takes it up and works for 15 days. Finally C finishes the work in 18 days. In how many days can C do the work when doing it separately?

A can do a piece of work in 8 days which B can destroy in 3 days. A has worked for 6 days, during the last 2 of which B has been destroying; how many days must A now work alone to complete the work ?

Pratibha is thrices as efficient as Sonia and is therefore able to finish a piece of work in 60 days less than Sonia. Pratibha and Sonia can individually complete the work respectively in

3 men and 7 women can do a job in 5 days, while 4 men and 6 women can do it in 4 days. The number of days required for a group of 10 women working together, at the same rate as before, to finish the same job is :

If 100 cats kill 100 mice in 100 days, then 4 cats would kill 4 mice in how many days?

X can do a piece of work in 24 days. When he had worked for 4 days, Y joined him. If complete work was finished in 16 days, Y can alone finish that work in:

If 7 spiders make 7 webs in 7 days, then 1 spider will make 1 web in how many days ?

A and B together can finish a work in 15 days. A and C take 2 days more to complete the same work than that of B and C. A, B and C together complete the work in 8 days. In how many days will A finish it separately?

A can finish a work in 18 days and B can do the same work in 5 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?

If A, B and C can complete a work in 6 days. If A can work twice faster than B and thrice faster than C, then the number of days C alone can complete the work is :

Shashi can do a piece of work in 20 days. Tanya is 25% more efficient than Shashi. The number of days taken by Tanya to do the same piece of work is :

A and B can do a work in 8 days. B alone can do it in 24 days. In how many days, A alone can do the same work?

If 10 people can do a job in 20 days, then 20 people with twice the efficiency can do the same job in

Either 8 men or 17 women can paint a house in 33 days. The number of days required to paint three such houses by 12 men and 24 women working at the same rate is :

12 men and 18 boys working

A and B can do a piece of work in 10 days, B and C in 15 days and C and A in 20 days. C alone can do the work in :

A can do a work in 12 days and B can do it in 16 days. A and B started the work jointly and A left 2 days before the work is finished. Find the number of days they took to finish the work.

A certain number of men can do a work in 40 days. If there were 8 men more, it could be finished in 10 days less. How many men were there initially?

A alone takes as much time as B and C together take to complete a piece of work. If A and B together take 10 days and B alone takes 50 days to complete it, in what time can A and C together do the work?

A and B can complete a piece of work in 45 and 40 days respectively. Both started to work together, but after some days A left and B alone completed the rest work in 23 days. For how many days did A work?