1728 + Mcqs in Time and Work Page 21 McqOptions

1001.	If 9 men and 12 boys can do a piece of work in 4 days and 4 men and 16 boys can do the same piece of work in 6 days, how long will 6 men and 24 boys take to complete the same work?
A.	7 days
B.	4 days
C.	6 days
D.	5 days
Answer» C. 6 days

Discussion

1002.	In a hostel having 216 students, there is sufficient food to last for 18 days. If 27 more students join how long will that food last? (assume that all students consume the same amount of food per day)
A.	18
B.	19
C.	21
D.	16
Answer» E.

Discussion

1003.	A and B together do a job in 6.75 days and A could do the job in 9 days if he worked alone. How many days would B take to do the job if he worked alone?
A.	27
B.	18
C.	24
D.	21
Answer» B. 18

Discussion

1004.	P, Q, R and S can do a piece of work in 20 days. If P and Q together can do it in 50 days, and R alone in 60 days, then in how many days can S alone do it?
A.	60
B.	75
C.	65
D.	90
Answer» C. 65

Discussion

1005.	A and B together can do a work in 7 days and B and C together in 8.75 days and A can do the same work in 10.5 days. How many days will C take to complete double the same amount of work when working alone?
A.	31
B.	31.25
C.	30
D.	32.5
Answer» D. 32.5

Discussion

1006.	If ten men can do a job in ten days, what fraction of the job can be done by one man in one day?
A.	\(\frac{1}{20}\)
B.	\(\frac{1}{10}\)
C.	\(\frac{1}{2}\)
D.	\(\frac{1}{100}\)
Answer» E.

Discussion

1007.	If A, B and C can respectively complete a piece of work in 20, 24 and 36 days respectively, how many days will they take to complete the work. If they work together?
A.	\(8\frac{{16}}{{43}}\)
B.	\(6\frac{1}{4}\)
C.	\(9\frac{1}{4}\)
D.	\(7\frac{{19}}{{20}}\)
Answer» B. \(6\frac{1}{4}\)

Discussion

1008.	A container has two holes. The 1st hole alone empties the container in 15 minutes and 2nd hole alone empties the container in 10 minutes. If water leaks out at a constant rate, how long (in minutes) does it take if both the holes together empty the container?
A.	6
B.	\(\frac{1}{6}\)
C.	\(\frac{1}{7}\)
D.	7
Answer» B. \(\frac{1}{6}\)

Discussion

1009.	40 men working 8 hours per day can complete a piece of work in 21 days. How many hours per day must 120 men work to complete the same piece of work in 7 days?
A.	9 hrs
B.	10 hrs
C.	12 hrs
D.	8 hrs
Answer» E.

Discussion

1010.	One pipe can fill an empty cistern in 7.8 hours while another can drain the cistern when full in 19.5 hours. Both the pipes were turned on when the cistern was half-empty. How long will it take for the cistern to be full?
A.	3.9 hours
B.	7.8 hours
C.	6.5 hours
D.	5.2 hours
Answer» D. 5.2 hours

Discussion

1011.	A and B can be do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. A alone can do the work in how many days?
A.	15
B.	30
C.	24
D.	40
Answer» C. 24

Discussion

1012.	Pipes A, B and C can fill a tank in 30 h, 40 h and 60 h respectively. Pipes A, B and C are opened at 7 a.m., 8 a.m and 10 a.m., respectively on the same day. When will the tank be full?
A.	9:40 p.m
B.	10:00 p.m
C.	9:20 p.m
D.	10:20 p.m
Answer» D. 10:20 p.m

Discussion

1013.	If 16 people can build a wall in 15 days, how many people would be needed to build it in 8 days?
A.	32
B.	25
C.	24
D.	30
Answer» E.

Discussion

1014.	A, B and C undertook a work for Rs. 80000. Together A and B complete 3/4th part of the work. What is the share (in Rs.) of C?
A.	20000
B.	25000
C.	30000
D.	22000
Answer» B. 25000

Discussion

1015.	A, B and C together can complete a work in 20 days. A and B together can complete the same work in 30 days. Then C alone can complete the same work in how many days?
A.	10
B.	30
C.	45
D.	60
Answer» E.

Discussion

1016.	A can do a piece of work in 20 days. He worked for 5 days and B finished the remaining work in 42 days. B alone can do the whole work in how many days?
A.	56
B.	52
C.	46
D.	64
E.	48
Answer» B. 52

Discussion

1017.	30 persons can finish a job in 20 days. After 6 days, how many persons should leave the job, so that work is completed in a total of 26 days?
A.	9
B.	12
C.	8
D.	7
Answer» B. 12

Discussion

1018.	how many days 16 females complete the whole work.
A.	27(5/8)
B.	31(7/38)
C.	31(1/8)
D.	28(3/8)
E.	28(1/8)
Answer» F.

Discussion

1019.	A completes two-third part of a work in 16 days, and the remaining work is completed by B alone. The entire work is completed in 21 days. A and B together will complete 65% of the same work in∶
A.	5 days
B.	6 days
C.	8 days
D.	4 days
Answer» C. 8 days

Discussion

1020.	P alone can do a work in 25 days. P is 40% less efficient than Q. In how many days can Q alone do the work?
A.	18
B.	20
C.	15
D.	16
Answer» D. 16

Discussion

1021.	A can complete 50% of a job in 9 days and B can complete 25% of the job in 9 days if they worked alone. If they work together, how much of the job (in %) they can complete in 9 days?
A.	80
B.	90
C.	75
D.	100
Answer» D. 100

Discussion

1022.	A alone can do a work in 20 days. B is 25% more efficient than A. A and B started working and worked for 4 days. If C alone completed the remaining job in 22 days. How many days C alone takes to complete the entire job?
A.	24 days
B.	36 days
C.	12 days
D.	20 days
E.	40 days
Answer» F.

Discussion

1023.	Had been one menless, then the number of days required to do a piece of work would have been one more. If the number of Man. Days required to complete the work is 56, how many workers were there?
A.	14
B.	9
C.	6
D.	8
Answer» E.

Discussion

1024.	A wall of 100 meter can be built by 7 large robots or 10 small robots in 10 days. How many days will 14 large robots and 20 small robots take to build a wall of 600 meter?
A.	30
B.	25
C.	20
D.	15
Answer» E.

Discussion

1025.	C takes twice as long as B to complete a work. A takes three times as long as C to complete the same work. A, B and C start working together. A leaves 6 days before the completion of work and B leaves 3 days before the completion of work and C works for x days. If B alone can complete the same work in 16 days, then in how many days the work will be completed?
A.	16 days
B.	20 days
C.	10 days
D.	12 days
Answer» E.

Discussion

1026.	25 persons can finish a work working 6 hours a day in 18 days. In how many days working 5 hours a day, 20 persons can finish the same work?
A.	20
B.	22
C.	24
D.	27
Answer» E.

Discussion

1027.	30 men working 8 hours per day can dig a pond in 16 days. By working how many hours per day can 32 men dig the same pond in 20 days?
A.	7 hours per day
B.	5 hours per day
C.	8 hours per day
D.	6 hours per day
Answer» E.

Discussion

1028.	Manoj does a work in 20 days and Sahil does the same work in 30 days. In how many days they together will do the same work?
A.	10 days
B.	14 days
C.	12 days
D.	16 days
Answer» D. 16 days

Discussion

1029.	35 persons are engaged to complete a work in 60 days. After 32 days it is observed that only (2/5)th part of the work has been done. The number of persons to be engaged to complete the remaining work in the said period is
A.	20
B.	35
C.	30
D.	25
Answer» E.

Discussion

1030.	Rama and Hari can together finish a piece of work in 15 day. Rama works twice as fast as Hari, then Hari alone can finish work in :
A.	45 days
B.	30 days
C.	25 days
D.	20 days
Answer» B. 30 days

Discussion

1031.	If 60 boys can finish a work in 15 days by working 8 hours a day, then how many hours a day should 72 boys work to finish that work within 20 days?
A.	4
B.	6
C.	5
D.	7
Answer» D. 7

Discussion

1032.	Minena and Mashuka work together to complete a task in 9 days. Mashuka starts working alone and quits on completion of 2/5 of the work. Minena then completes the task alone. In this way, it takes 19.5 days to complete. If Mashuka works faster than Minena, how many days will Minena take to complete the task alone?
A.	25.5
B.	22.5
C.	25
D.	24
Answer» C. 25

Discussion

1033.	In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?
A.	36
B.	24
C.	28
D.	40
Answer» B. 24

Discussion

1034.	A can do 1/3rd of a job in 3 days and B can do half of the job in 9 days. If they working together, then in how many days can they finish half of the job?
A.	4
B.	5
C.	6
D.	3
Answer» E.

Discussion

1035.	A and B can do a piece of work in 10 days and 15 days, respectively. They work together for 4 days. The remaining work is completed by C alone in 12 days. C alone will complete \(\frac{4}{9}\) part of the original work in:
A.	24 days
B.	12 days
C.	20 days
D.	16 days
Answer» E.

Discussion

1036.	P and Q together can complete a work in 20 days. If P alone can complete the same work in 36 days, then in how many days Q alone can complete the same work?
A.	48 days
B.	42 days
C.	45 days
D.	51 days
Answer» D. 51 days

Discussion

1037.	A tap can fill a tank in 2 hours and by another tap the tank becomes empty in 3 hours. In how much time will the tank be full when both the taps are open?
A.	\(1\frac{1}{2}\) hrs.
B.	\(2\frac{1}{2}\) hrs.
C.	4 hrs.
D.	6 hrs.
Answer» E.

Discussion

1038.	A and B together can complete some work in 36 days, b and C together can complete the same work in 60 days, A and C together can complete the same work in 45 days. In how many days B alone can complete the same work?
A.	60 days
B.	90 days
C.	180 days
D.	100 days
Answer» C. 180 days

Discussion

1039.	A, B and C can do a work in 36, 72 and 54 days respectively. They started the work together but A left 8 days before the completion of the work and C left 12 days before the completion of the work. In how many days was the work completed?
A.	21
B.	20
C.	24
D.	25
Answer» D. 25

Discussion

1040.	A can do 2/5 of a work in 6 days and B can do 2/3 of the same work in 12 days. A and B worked together for 6 days. C alone completes the remaining work in 8 days. A and C, working together, will compete the same work in:
A.	12 days
B.	10 days
C.	8 days
D.	9 days
Answer» C. 8 days

Discussion

1041.	6 men and 2 boys can do five times as much work as one man and one boy. Find the ratio ofthe working capacity of a man to that of a boy.
A.	1 : 3
B.	3 : 1
C.	3 : 2
D.	4 : 1
Answer» C. 3 : 2

Discussion

1042.	If 10 men can do a piece of work in 12 days, then what will be the time taken by 12 men to do the same piece of work?
A.	12 days
B.	10 days
C.	9 days
D.	8 days
Answer» C. 9 days

Discussion

1043.	A can complete a work in 5 days. B can complete the same in 10 days. If B assists A every alternate day starting from the first day in how many days the work will be completed?
A.	3
B.	4
C.	2
D.	1
Answer» C. 2

Discussion

1044.	A can do a piece of work in certain number of days. While B takes three days more than A to complete the same work. Working together, A and B can complete the work in two days. How many days does B take to complete the work?
A.	8
B.	3
C.	4
D.	6
Answer» E.

Discussion

1045.	If 20 persons can clean 20 floors in 20 days, then in how many days can 16 persons clean 16 floors?
A.	25 days
B.	24 days
C.	20 days
D.	16 days
Answer» D. 16 days

Discussion

1046.	Arun can finish a work in 36 hours and Ballu is twice as efficient as Arun. If they work together, how many hours they will take to finish the same work?
A.	10
B.	12
C.	15
D.	18
Answer» C. 15

Discussion

1047.	A and B together can do a piece of work in 5 days and A alone can do it in 30 days. B alone can do the work in how many days?
A.	5
B.	6
C.	8
D.	10
Answer» C. 8

Discussion

1048.	F alone can complete a work in 24 days and G alone can complete the same work in 32 days. F and G start the work together but G leaves the work 8 days before the completion of work. In how many days the total work will be completed?
A.	130/5 days
B.	106/7 days
C.	114/7 days
D.	120/7 days
Answer» E.

Discussion

1049.	A can do a work in 15 days. B is 25% more efficient than A. In how many days, working together A and B will complete the same work?
A.	\(\frac{{21}}{4}\)
B.	\(\frac{{25}}{7}\)
C.	\(\frac{{24}}{5}\)
D.	\(\frac{{20}}{3}\)
Answer» E.

Discussion

1050.	Mohan can do a bit of work in 25 days which can be completed by Sohan in 20 days. Both together labour for 5 days and afterward Mohan leaves off. How long will Sohan take to complete the remaining work ?
A.	20 days
B.	11 days
C.	14 days
D.	21 days
E.	None of the above/More than one of the above
Answer» C. 14 days

Discussion

Explore topic-wise MCQs in General Aptitude.

If 9 men and 12 boys can do a piece of work in 4 days and 4 men and 16 boys can do the same piece of work in 6 days, how long will 6 men and 24 boys take to complete the same work?

In a hostel having 216 students, there is sufficient food to last for 18 days. If 27 more students join how long will that food last? (assume that all students consume the same amount of food per day)

A and B together do a job in 6.75 days and A could do the job in 9 days if he worked alone. How many days would B take to do the job if he worked alone?

P, Q, R and S can do a piece of work in 20 days. If P and Q together can do it in 50 days, and R alone in 60 days, then in how many days can S alone do it?

A and B together can do a work in 7 days and B and C together in 8.75 days and A can do the same work in 10.5 days. How many days will C take to complete double the same amount of work when working alone?

If ten men can do a job in ten days, what fraction of the job can be done by one man in one day?

If A, B and C can respectively complete a piece of work in 20, 24 and 36 days respectively, how many days will they take to complete the work. If they work together?

A container has two holes. The 1st hole alone empties the container in 15 minutes and 2nd hole alone empties the container in 10 minutes. If water leaks out at a constant rate, how long (in minutes) does it take if both the holes together empty the container?

40 men working 8 hours per day can complete a piece of work in 21 days. How many hours per day must 120 men work to complete the same piece of work in 7 days?

One pipe can fill an empty cistern in 7.8 hours while another can drain the cistern when full in 19.5 hours. Both the pipes were turned on when the cistern was half-empty. How long will it take for the cistern to be full?

A and B can be do a piece of work in 12 days, B and C in 15 days, C and A in 20 days. A alone can do the work in how many days?

Pipes A, B and C can fill a tank in 30 h, 40 h and 60 h respectively. Pipes A, B and C are opened at 7 a.m., 8 a.m and 10 a.m., respectively on the same day. When will the tank be full?

If 16 people can build a wall in 15 days, how many people would be needed to build it in 8 days?

A, B and C undertook a work for Rs. 80000. Together A and B complete 3/4th part of the work. What is the share (in Rs.) of C?

A, B and C together can complete a work in 20 days. A and B together can complete the same work in 30 days. Then C alone can complete the same work in how many days?

A can do a piece of work in 20 days. He worked for 5 days and B finished the remaining work in 42 days. B alone can do the whole work in how many days?

30 persons can finish a job in 20 days. After 6 days, how many persons should leave the job, so that work is completed in a total of 26 days?

how many days 16 females complete the whole work.

A completes two-third part of a work in 16 days, and the remaining work is completed by B alone. The entire work is completed in 21 days. A and B together will complete 65% of the same work in∶

P alone can do a work in 25 days. P is 40% less efficient than Q. In how many days can Q alone do the work?

A can complete 50% of a job in 9 days and B can complete 25% of the job in 9 days if they worked alone. If they work together, how much of the job (in %) they can complete in 9 days?

A alone can do a work in 20 days. B is 25% more efficient than A. A and B started working and worked for 4 days. If C alone completed the remaining job in 22 days. How many days C alone takes to complete the entire job?

Had been one menless, then the number of days required to do a piece of work would have been one more. If the number of Man. Days required to complete the work is 56, how many workers were there?

A wall of 100 meter can be built by 7 large robots or 10 small robots in 10 days. How many days will 14 large robots and 20 small robots take to build a wall of 600 meter?

25 persons can finish a work working 6 hours a day in 18 days. In how many days working 5 hours a day, 20 persons can finish the same work?

30 men working 8 hours per day can dig a pond in 16 days. By working how many hours per day can 32 men dig the same pond in 20 days?

Manoj does a work in 20 days and Sahil does the same work in 30 days. In how many days they together will do the same work?

35 persons are engaged to complete a work in 60 days. After 32 days it is observed that only (2/5)th part of the work has been done. The number of persons to be engaged to complete the remaining work in the said period is

Rama and Hari can together finish a piece of work in 15 day. Rama works twice as fast as Hari, then Hari alone can finish work in :

If 60 boys can finish a work in 15 days by working 8 hours a day, then how many hours a day should 72 boys work to finish that work within 20 days?

In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?

A can do 1/3rd of a job in 3 days and B can do half of the job in 9 days. If they working together, then in how many days can they finish half of the job?

A and B can do a piece of work in 10 days and 15 days, respectively. They work together for 4 days. The remaining work is completed by C alone in 12 days. C alone will complete \(\frac{4}{9}\) part of the original work in:

P and Q together can complete a work in 20 days. If P alone can complete the same work in 36 days, then in how many days Q alone can complete the same work?

A tap can fill a tank in 2 hours and by another tap the tank becomes empty in 3 hours. In how much time will the tank be full when both the taps are open?

A and B together can complete some work in 36 days, b and C together can complete the same work in 60 days, A and C together can complete the same work in 45 days. In how many days B alone can complete the same work?

A, B and C can do a work in 36, 72 and 54 days respectively. They started the work together but A left 8 days before the completion of the work and C left 12 days before the completion of the work. In how many days was the work completed?

A can do 2/5 of a work in 6 days and B can do 2/3 of the same work in 12 days. A and B worked together for 6 days. C alone completes the remaining work in 8 days. A and C, working together, will compete the same work in:

6 men and 2 boys can do five times as much work as one man and one boy. Find the ratio ofthe working capacity of a man to that of a boy.

If 10 men can do a piece of work in 12 days, then what will be the time taken by 12 men to do the same piece of work?

A can complete a work in 5 days. B can complete the same in 10 days. If B assists A every alternate day starting from the first day in how many days the work will be completed?

A can do a piece of work in certain number of days. While B takes three days more than A to complete the same work. Working together, A and B can complete the work in two days. How many days does B take to complete the work?

If 20 persons can clean 20 floors in 20 days, then in how many days can 16 persons clean 16 floors?

Arun can finish a work in 36 hours and Ballu is twice as efficient as Arun. If they work together, how many hours they will take to finish the same work?

A and B together can do a piece of work in 5 days and A alone can do it in 30 days. B alone can do the work in how many days?

F alone can complete a work in 24 days and G alone can complete the same work in 32 days. F and G start the work together but G leaves the work 8 days before the completion of work. In how many days the total work will be completed?

A can do a work in 15 days. B is 25% more efficient than A. In how many days, working together A and B will complete the same work?

Mohan can do a bit of work in 25 days which can be completed by Sohan in 20 days. Both together labour for 5 days and afterward Mohan leaves off. How long will Sohan take to complete the remaining work ?