Cloth Makers Inc. has p spindles, each of which can produce q metres of cloth on an average in rminutes. If the spindles are made to run with no interruption, then how many hours will it take for 20000 metres of cloth to be produced ?

$\frac{{20000{\text{pq}}}}{{\text{r}}}$$

$\frac{{20000{\text{rq}}}}{{\text{p}}}$$

$\frac{{20000{\text{r}}}}{{{\text{pq}}}}$$

$\frac{{20000{\text{r}}}}{{60{\text{pq}}}}$$

A manufacturer builds a machine which will address 500 envelopes in 8 minutes. He wishes to build another machine so that when both are operating together they will address 500 envelopes in 2 minutes. The equation used to find how many minutes x it would require the second machine to address 500 envelopes alone, is = ?

$\frac{{500}}{8} + \frac{{500}}{x} = 500$$

$\frac{1}{8} + \frac{1}{x} = \frac{1}{2}$$

$\frac{{500}}{8} + \frac{{500}}{x} = 500$$

$\frac{x}{2} + \frac{x}{8} = 1$$

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

${\text{8}}\frac{3}{4}{\text{ days}}$$

${\text{5}}\frac{1}{5}{\text{ days}}$$

${\text{6}}\frac{1}{4}{\text{ days}}$$

${\text{7}}\frac{1}{2}{\text{ days}}$$

${\text{8}}\frac{3}{4}{\text{ days}}$$

If 40 men or 60 women or 80 children can do a piece of work in 6 months, then 10 men, 10 women and 10 children together do the work in ?

${\text{5}}\frac{6}{{13}}{\text{ months}}$$

${\text{5}}\frac{7}{{13}}{\text{ months}}$$

${\text{11}}\frac{1}{{13}}{\text{ months}}$$

If 16 men or 20 women can do a piece of work in 25 days. In what time will 28 men and 15 women do it ?

${\text{14}}\frac{2}{7}{\text{ days}}$$

${\text{33}}\frac{1}{3}{\text{days}}$$

${\text{18}}\frac{3}{4}{\text{ days}}$$

A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With the help of C, they did the job in 4 days only. Then, C alone can do the job in ?

${\text{9}}\frac{1}{5}{\text{ days}}$$

${\text{9}}\frac{2}{5}{\text{ days}}$$

${\text{9}}\frac{3}{5}{\text{ days}}$$

A complete $$\frac{7}{{10}}$$ of a work in 15 days, then he completed the remaining work with the help of B in 4 days. In how many day A and B can complete entire work together?

$8\frac{1}{4}\,\,{\text{days}}$$

$10\frac{1}{2}\,\,{\text{days}}$$

$12\frac{2}{3}\,\,{\text{days}}$$

$13\frac{1}{3}\,\,{\text{days}}$$

$8\frac{1}{4}\,\,{\text{days}}$$

452 + Mcqs in Time and Work in General Aptitude Page 9 McqOptions

401.	Cloth Makers Inc. has p spindles, each of which can produce q metres of cloth on an average in rminutes. If the spindles are made to run with no interruption, then how many hours will it take for 20000 metres of cloth to be produced ?
A.	$\frac{{20000{\text{pq}}}}{{\text{r}}}$$
B.	$\frac{{20000{\text{rq}}}}{{\text{p}}}$$
C.	$\frac{{20000{\text{r}}}}{{{\text{pq}}}}$$
D.	$\frac{{20000{\text{r}}}}{{60{\text{pq}}}}$$
Answer» E.

Discussion

402.	Ronald and Elan are working on an assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages.How much time will they take, working together on two different computers to type an assignment of 110 pages ?
A.	hours 30 minutes
B.	hours
C.	hours 15 minutes
D.	hours 25 minutes
Answer» D. hours 25 minutes

Discussion

403.	P, Q and R are three typists who working simultaneously can type 216 pages in 4 hours. In one hour, R can type as many pages more than Q as Q can type more than P. During a period of five hours, R can type as many pages as P can during seven hours. How many pages does each of them type per hour ?
A.	4, 17, 20
B.	5, 17, 22
C.	5, 18, 21
D.	6, 18, 22
Answer» D. 6, 18, 22

Discussion

404.	A manufacturer builds a machine which will address 500 envelopes in 8 minutes. He wishes to build another machine so that when both are operating together they will address 500 envelopes in 2 minutes. The equation used to find how many minutes x it would require the second machine to address 500 envelopes alone, is = ?
A.	$8 - x = 2$$
B.	$\frac{1}{8} + \frac{1}{x} = \frac{1}{2}$$
C.	$\frac{{500}}{8} + \frac{{500}}{x} = 500$$
D.	$\frac{x}{2} + \frac{x}{8} = 1$$
Answer» C. $\frac{{500}}{8} + \frac{{500}}{x} = 500$$

Discussion

405.	A conveyor belt delivers baggage at the rate of 3 tons in 5 minutes and second conveyor belt delivers baggage at the rate of 1 ton in 2 minutes. How much time will it take to get33 tons of baggage delivered using both the conveyor belts together ?
A.	5 minutes30 seconds
B.	0 minutes
C.	5 minutes
D.	5 minutes
Answer» C. 5 minutes

Discussion

406.	Twenty women together can complete a piece of work in 16 days, 16 men together can complete the same work in 15 days. The ratio of the working capacity of a man to that of a women is = ?
A.	: 4
B.	: 3
C.	: 3
D.	: 5
Answer» C. : 3

Discussion

407.	2 men and 3 women together or 4 men can complete a piece of work in 20 days. 3 men and 3 women will complete the same work in = ?
A.	2 days
B.	6 days
C.	8 days
D.	9 days
Answer» C. 8 days

Discussion

408.	Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it in ?
A.	5 days
B.	8 days
C.	0 days
D.	4 days
Answer» C. 0 days

Discussion

409.	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 in ?
A.	0 days
B.	6 days
C.	0 days
D.	0 days
Answer» E.

Discussion

410.	Two workers A and Bworking together completed a job in 5 days. If A had worked twice as efficiently as he actually did, the work would have been completed in 3 days. To complete the job alone, A would require?
A.	${\text{5}}\frac{1}{5}{\text{ days}}$$
B.	${\text{6}}\frac{1}{4}{\text{ days}}$$
C.	${\text{7}}\frac{1}{2}{\text{ days}}$$
D.	${\text{8}}\frac{3}{4}{\text{ days}}$$
Answer» D. ${\text{8}}\frac{3}{4}{\text{ days}}$$

Discussion

411.	If 40 men or 60 women or 80 children can do a piece of work in 6 months, then 10 men, 10 women and 10 children together do the work in ?
A.	${\text{5}}\frac{6}{{13}}{\text{ months}}$$
B.	${\text{6 months}}$$
C.	${\text{5}}\frac{7}{{13}}{\text{ months}}$$
D.	${\text{11}}\frac{1}{{13}}{\text{ months}}$$
Answer» E.

Discussion

412.	5 men and 2 women working together can do four times as much work per hour as a men and a women together. The work done by a men and a women should be in the ratio ?
A.	: 2
B.	: 1
C.	: 3
D.	: 1
Answer» C. : 3

Discussion

413.	Computer A takes 3 minutes to process an input while computer B takes 5 minutes. If computers A, B and C can process an average of 14 inputs in one hour, how many minutes does computer C alone take to process one input ?
A.	minutes
B.	minutes
C.	0 minitus
D.	one of these
Answer» C. 0 minitus

Discussion

414.	Rosa can eat 32 rosogollas in one hour. Her sister Lila needs three hours to eat the same number. How much time will they take to eat 32 rosogollas together ?
A.	5 minutes
B.	5 minutes
C.	0 minutes
D.	one of these
Answer» B. 5 minutes

Discussion

415.	Work done by A in one day is half of the work done by B in one day. Work done by B is half of the work done by C in one day. If C alone can complete the work in 7 days, in how many days can A, B and C together complete the work ?
A.	days
B.	4 days
C.	1 days
D.	8 days
E.	one of these
Answer» B. 4 days

Discussion

416.	A man and a boy together can do a certain amount of digging in 40 days. Their speeds in digging are in the ratio of 8 : 5. How many days will the boy take to complete the work if engaged alone ?
A.	2 days
B.	8 days
C.	0 days
D.	04 days
Answer» E.

Discussion

417.	Jyoti can do $$\frac{3}{4}$$of a job in 12 days. Mala is twice as efficient as Jyoti. In how many days will Mala finish the job ?
A.	days
B.	days
C.	2 days
D.	6 days
Answer» C. 2 days

Discussion

418.	If 16 men or 20 women can do a piece of work in 25 days. In what time will 28 men and 15 women do it ?
A.	${\text{14}}\frac{2}{7}{\text{ days}}$$
B.	${\text{33}}\frac{1}{3}{\text{days}}$$
C.	${\text{18}}\frac{3}{4}{\text{ days}}$$
D.	${\text{10 days}}$$
Answer» E.

Discussion

419.	If 3 men or 6 women can do a piece of work in 16 days, in how many days can 12 men and 8 women do the same piece of work ?
A.	days
B.	days
C.	days
D.	days
Answer» D. days

Discussion

420.	A can complete $$\frac{1}{3}$$of a work in 5 days and B, $$\frac{2}{5}$$of the work in 10 days. In how many days both A and B together can complete the work ?
A.	${\text{7}}\frac{1}{2}$$
B.	${\text{8}}\frac{4}{5}$$
C.	${\text{9}}\frac{3}{8}$$
D.	0
Answer» D. 0

Discussion

421.	A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With the help of C, they did the job in 4 days only. Then, C alone can do the job in ?
A.	${\text{9}}\frac{1}{5}{\text{ days}}$$
B.	${\text{9}}\frac{2}{5}{\text{ days}}$$
C.	${\text{9}}\frac{3}{5}{\text{ days}}$$
D.	${\text{10 days}}$$
Answer» D. ${\text{10 days}}$$

Discussion

422.	5 men can do a piece of work in 6 days while 10 women can do it in 5 days. In how many days can 5 womenand 3 men do it ?
A.	days
B.	days
C.	days
D.	days
Answer» C. days

Discussion

423.	Working efficiencies of P and Q for completing a piece of work are in the ratio 3 : 4. The number of days to be taken by them to complete the work will be in the ratio ?
A.	: 2
B.	: 3
C.	: 4
D.	: 3
Answer» E.

Discussion

424.	Two typist of varying skills can do a job in 6 minutes if they work together. If the first typist typed alone for 4 minutes and then the second typist typed alone for 6 minutes, they would be left with $$\frac{1}{5}$$ of the whole work. How many minutes would it take the slower typist to complete the typing job working alone ?
A.	0 minutes
B.	5 minutes
C.	2 minutes
D.	0 minutes
E.	7 minutes
Answer» C. 2 minutes

Discussion

425.	If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in:
A.	0 min
B.	00 min
C.	0 min
D.	5 min
Answer» D. 5 min

Discussion

426.	If 2 men or 3 women or 4 boys can do a piece of work in 52 days, then the same piece of work will be done by 1 man, 1 woman and 1 boy in:
A.	8 days
B.	6 days
C.	5 days
D.	0 days
Answer» B. 6 days

Discussion

427.	There was a leakage in the container of the refined oil. If 11 kg oil is leaked out per day then it would have lasted for 50 days, if the leakage was 15 kg per day, then it would have lasted for only 45 days. For how many days would the oil have lasted, if there was no leakage ant it was completely used for eating purpose?
A.	0 days
B.	2 days
C.	00 days
D.	20 days
Answer» C. 00 days

Discussion

428.	There are three boats A, B and C, working together they carry 60 people in each trip. One day an early morning A carried 50 people in few trips alone. When it stopped carrying the passengers B and Cstarted carrying the people together. It took a total of 10 trips to carry 300 people by A, B and C. It is known that each day on an average 300 people cross the river using only one of the 3 boats A, B and C. How many trips it would take to A to carry 150 passengers alone?
A.	5
B.	0
C.	5
D.	0
E.	one of these
Answer» B. 0

Discussion

429.	Three pipes A,B and C attached to a cistern. A can fill it in 10 min, B in 15 min, C is a waste pipe for emptying it. After opening both the pipes A and B, a man leaves the cisternand returns when the cistern should have been just full. Finding, however, that the waste pipe had left open, he closes it and the cistern now gets filled in 2 min. In how much time the pipe C, if opened alone, empty the full cistern?
A.	2 min
B.	6 min
C.	8 min
D.	5 min
E.	one of these
Answer» D. 5 min

Discussion

430.	Two pipes A and Bcan fill a cistern in 12 min and 16 min respectively. Both the pipes are opened together for a certain time but due to some obstruction the flow of water was restricted to $$\frac{7}{8}$$ of full flow in pipe A and $$\frac{5}{6}$$ of full in pipe B. This obstruction is removed after some time and tank is now filled in 3 min from that moment. How long was it before the full flow.
A.	min
B.	min
C.	.6 min
D.	.5 min
E.	one of these
Answer» E. one of these

Discussion

431.	A and B working together completed a job in 5 days. If A works twice as efficiently as he actually did and B works $$\frac{1}{3}$$ of actual efficiency, the work would have completed in 3 days. Find the for A to complete the job alone.
A.	$6\frac{1}{2}$$
B.	$6\frac{1}{4}$$
C.	$6\frac{3}{4}$$
D.	$12\frac{1}{2}$$
E.	one of these
Answer» C. $6\frac{3}{4}$$

Discussion

432.	A man and a boy received Rs. 800 as wages for 5 days for the work they did together. The man's efficiency in the work was thrice times that of the boy. What are the daily wages of the boy?
A.	s.76
B.	s. 56
C.	s.44
D.	s.40
Answer» E.

Discussion

433.	A, B and C completed a work costing Rs. 1800.A work for 6 days, B for 4 days and C for 9 days. If their daily wages are in the ratio of 5 : 6 : 4, how much amount will be received by A?
A.	s. 800
B.	s. 600
C.	s. 900
D.	s. 750
Answer» C. s. 900

Discussion

434.	A tank has a leak which would empty the completely filled tank in 10 hours. If the tank is full of water and a tap is opened which admits 4 litres of water per minutes in the tank, the leak takes 15 hours to empty the tank.how many litres does the tank hold?
A.	400 litres
B.	500 litres
C.	200 litres
D.	200 litres
Answer» E.

Discussion

435.	A boy and a girl together fill a cistern with water. The boy pours 4 liters of water every 3 minutes and girl pours 3 litres every 4 minutes. How much time will it take to fill 100 litres of water in the cistern?
A.	6 minute
B.	2 minutes
C.	8 minutes
D.	4 minutes
Answer» D. 4 minutes

Discussion

436.	A complete $$\frac{7}{{10}}$$ of a work in 15 days, then he completed the remaining work with the help of B in 4 days. In how many day A and B can complete entire work together?
A.	$10\frac{1}{2}\,\,{\text{days}}$$
B.	$12\frac{2}{3}\,\,{\text{days}}$$
C.	$13\frac{1}{3}\,\,{\text{days}}$$
D.	$8\frac{1}{4}\,\,{\text{days}}$$
Answer» D. $8\frac{1}{4}\,\,{\text{days}}$$

Discussion

437.	If 10 men or 20 boys can make 260 mats in 20 days, then how many mats will be made by 8 men and 4 boys in 20 days?
A.	60
B.	40
C.	80
D.	20
Answer» B. 40

Discussion

438.	To complete a work, A takes 50% more time than B. If together they take 18 days to complete the work, how much time shall B take to do it?
A.	0 days
B.	5 days
C.	0 days
D.	5 days
Answer» B. 5 days

Discussion

439.	A cistern can be filled by two pipes in 20 and 30 minutes respectively. Both pipes being opened, when the first pipe must be turned off so that the cistern may be filled in 10 minutes more.
A.	fter 10 minutes
B.	fter 12 minutes
C.	fter 20 minutes
D.	fter 8 minutes
Answer» E.

Discussion

440.	Two pipes can fill an empty tank separately in 24 minutes and 40 minutes respectively and a third pipe can empty 30 gallons of water per minute. If all three pipes are open, empty tanks become full in one hour. The capacity of the tank (in gallons) is:
A.	00 gallons
B.	00 gallons
C.	00 gallons
D.	00 gallons
Answer» C. 00 gallons

Discussion

441.	Two pipes, P and Q can fill a cistern in 12 and 15 minutes respectively. Both are opened together, but at the end of 3 minutes, P is turned off. In how many more minutes will Q fill the cistern?
A.	minutes
B.	$7\frac{1}{2}$$ minutes
C.	minutes
D.	$8\frac{1}{4}$$ minutes
Answer» E.

Discussion

442.	A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it?
A.	hours
B.	0 hours
C.	2 hours
D.	4 hours
Answer» D. 4 hours

Discussion

443.	If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be:
A.	days
B.	days
C.	days
D.	days
Answer» B. days

Discussion

444.	Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened simultaneously, then the cistern will be filled in:
A.	.5 hr
B.	hr
C.	.5 hr
D.	0 hr
Answer» B. hr

Discussion

445.	To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take :
A.	Days
B.	.5 Days
C.	Days
D.	.5 Days
Answer» D. .5 Days

Discussion

446.	If 3 men or 4 women can plough a field in 43 days, how long will 7 men and 5 women take to plough it?
A.	0 days
B.	1 days
C.	days
D.	2 days
Answer» E.

Discussion

447.	A does half as much work as B in one -sixth of the time.If together they take 10 days to complete a work, how much time shall B take to do it alone?
A.	3.33 days
B.	0 days
C.	0 days
D.	0 days
Answer» E.

Discussion

448.	Three men A, B, C working together can do a job in 6 hours less time than A alone, in one hour less time than B alone and in one half the time needed by C when working alone. Then A and B together can do the job in:
A.	$\frac{2}{3}$$ hours
B.	$\frac{3}{4}$$ hours
C.	$\frac{3}{2}$$ hours
D.	$\frac{4}{3}$$ hours
Answer» E.

Discussion

449.	Two pipes A and B can fill a tank in 36 min. and 45 min. respectively. Another pipe C can empty the tank in 30 min. First A and B are opened. After 7 minutes, C is also opened. The tank filled up in:
A.	9 min.
B.	6 min
C.	0 min.
D.	5 min.
Answer» B. 6 min

Discussion

450.	At a Tech Pvt Ltd. there are some engineering students employed as trainee engineers, belong to two eminent institutions of India. One group belongs to IIT and another to NIT. Each student of IIT works for 10 hours a day till 60 days and each student of NIT works for 8 hours a day till 80 days on the two same project. The ratio of students of IIT and that of NIT is 4:5 respectively. Students ofwhich institution is slower in work and by how much?
A.	ITian is 20% less efficient
B.	ITian is 33.33% less efficien
C.	IT is 25% less efficient
D.	IT is 33.33% less efficient
E.	annot be determined
Answer» D. IT is 33.33% less efficient

Discussion

Explore topic-wise MCQs in General Aptitude.

Cloth Makers Inc. has p spindles, each of which can produce q metres of cloth on an average in rminutes. If the spindles are made to run with no interruption, then how many hours will it take for 20000 metres of cloth to be produced ?

Ronald and Elan are working on an assignment. Ronald takes 6 hours to type 32 pages on a computer, while Elan takes 5 hours to type 40 pages.How much time will they take, working together on two different computers to type an assignment of 110 pages ?

P, Q and R are three typists who working simultaneously can type 216 pages in 4 hours. In one hour, R can type as many pages more than Q as Q can type more than P. During a period of five hours, R can type as many pages as P can during seven hours. How many pages does each of them type per hour ?

A conveyor belt delivers baggage at the rate of 3 tons in 5 minutes and second conveyor belt delivers baggage at the rate of 1 ton in 2 minutes. How much time will it take to get33 tons of baggage delivered using both the conveyor belts together ?

Twenty women together can complete a piece of work in 16 days, 16 men together can complete the same work in 15 days. The ratio of the working capacity of a man to that of a women is = ?

2 men and 3 women together or 4 men can complete a piece of work in 20 days. 3 men and 3 women will complete the same work in = ?

Tapas works twice as fast as Mihir. If both of them together complete a work in 12 days, Tapas alone can complete it 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 in ?

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

If 40 men or 60 women or 80 children can do a piece of work in 6 months, then 10 men, 10 women and 10 children together do the work in ?

5 men and 2 women working together can do four times as much work per hour as a men and a women together. The work done by a men and a women should be in the ratio ?

Computer A takes 3 minutes to process an input while computer B takes 5 minutes. If computers A, B and C can process an average of 14 inputs in one hour, how many minutes does computer C alone take to process one input ?

Rosa can eat 32 rosogollas in one hour. Her sister Lila needs three hours to eat the same number. How much time will they take to eat 32 rosogollas together ?

Work done by A in one day is half of the work done by B in one day. Work done by B is half of the work done by C in one day. If C alone can complete the work in 7 days, in how many days can A, B and C together complete the work ?

A man and a boy together can do a certain amount of digging in 40 days. Their speeds in digging are in the ratio of 8 : 5. How many days will the boy take to complete the work if engaged alone ?

Jyoti can do $$\frac{3}{4}$$of a job in 12 days. Mala is twice as efficient as Jyoti. In how many days will Mala finish the job ?

If 16 men or 20 women can do a piece of work in 25 days. In what time will 28 men and 15 women do it ?

If 3 men or 6 women can do a piece of work in 16 days, in how many days can 12 men and 8 women do the same piece of work ?

A can complete $$\frac{1}{3}$$of a work in 5 days and B, $$\frac{2}{5}$$of the work in 10 days. In how many days both A and B together can complete the work ?

A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With the help of C, they did the job in 4 days only. Then, C alone can do the job in ?

5 men can do a piece of work in 6 days while 10 women can do it in 5 days. In how many days can 5 womenand 3 men do it ?

Working efficiencies of P and Q for completing a piece of work are in the ratio 3 : 4. The number of days to be taken by them to complete the work will be in the ratio ?

If one pipe A can fill a tank in 20 minutes, then 5 pipes, each of 20% efficiency of A, can fill the tank in:

If 2 men or 3 women or 4 boys can do a piece of work in 52 days, then the same piece of work will be done by 1 man, 1 woman and 1 boy in:

A and B working together completed a job in 5 days. If A works twice as efficiently as he actually did and B works $$\frac{1}{3}$$ of actual efficiency, the work would have completed in 3 days. Find the for A to complete the job alone.

A man and a boy received Rs. 800 as wages for 5 days for the work they did together. The man's efficiency in the work was thrice times that of the boy. What are the daily wages of the boy?

A, B and C completed a work costing Rs. 1800.A work for 6 days, B for 4 days and C for 9 days. If their daily wages are in the ratio of 5 : 6 : 4, how much amount will be received by A?

A tank has a leak which would empty the completely filled tank in 10 hours. If the tank is full of water and a tap is opened which admits 4 litres of water per minutes in the tank, the leak takes 15 hours to empty the tank.how many litres does the tank hold?

A boy and a girl together fill a cistern with water. The boy pours 4 liters of water every 3 minutes and girl pours 3 litres every 4 minutes. How much time will it take to fill 100 litres of water in the cistern?

A complete $$\frac{7}{{10}}$$ of a work in 15 days, then he completed the remaining work with the help of B in 4 days. In how many day A and B can complete entire work together?

If 10 men or 20 boys can make 260 mats in 20 days, then how many mats will be made by 8 men and 4 boys in 20 days?

To complete a work, A takes 50% more time than B. If together they take 18 days to complete the work, how much time shall B take to do it?

A cistern can be filled by two pipes in 20 and 30 minutes respectively. Both pipes being opened, when the first pipe must be turned off so that the cistern may be filled in 10 minutes more.

Two pipes can fill an empty tank separately in 24 minutes and 40 minutes respectively and a third pipe can empty 30 gallons of water per minute. If all three pipes are open, empty tanks become full in one hour. The capacity of the tank (in gallons) is:

Two pipes, P and Q can fill a cistern in 12 and 15 minutes respectively. Both are opened together, but at the end of 3 minutes, P is turned off. In how many more minutes will Q fill the cistern?

A can do a piece of work in 4 hours; B and C together can do it in 3 hours, while A and C together can do it in 2 hours. How long will B alone take to do it?

If 6 men and 8 boys can do a piece of work in 10 days while 26 men and 48 boys can do the same in 2 days, the time taken by 15 men and 20 boys in doing the same type of work will be:

Two pipes can fill the cistern in 10hr and 12 hr respectively, while the third empty it in 20hr. If all pipes are opened simultaneously, then the cistern will be filled in:

To complete a piece of work A and B take 8 days, B and C 12 days. A, B and C take 6 days. A and C will take :

If 3 men or 4 women can plough a field in 43 days, how long will 7 men and 5 women take to plough it?

A does half as much work as B in one -sixth of the time.If together they take 10 days to complete a work, how much time shall B take to do it alone?

Three men A, B, C working together can do a job in 6 hours less time than A alone, in one hour less time than B alone and in one half the time needed by C when working alone. Then A and B together can do the job in:

Two pipes A and B can fill a tank in 36 min. and 45 min. respectively. Another pipe C can empty the tank in 30 min. First A and B are opened. After 7 minutes, C is also opened. The tank filled up in: