CBSE Class 4 Mathematics Time and Work MCQs

Question. 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 : B

Question. 7 men can complete a piece of work in 12 days. How many additional men will be required to complete double the work in 8 days ?
a) 28
b) 21
c) 14
d) 7

Answer : C

Question. 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 : A

Question. A can do as much work as B and C together can do. A and B can together do a piece of work in 9 hours 36 minutes and C can do it in 48 hours. The time (in hours) that B needs to do the work alone, is ?
a) 18 hrs
b) 24 hrs
c) 30 hrs
d) 12 hrs

Answer : B

Question. A and B together can complete a work in 8 days. B alone can complete that work in 12 days. B alone worked for four days. After that how long will A alone take to complete the work ?
a) 15 days
b) 18 days
c) 16 days
d) 20 days

Answer : C

Question. 6 men and 8 women can do a work in 10 days, Then 3 men and 4 women can do the same work in ?
a) 24 days
b) 20 days
c)12 days
d) 18 days

Answer : B

Question. A is thrice as good a workman as B and therefore is able to finish a job in 40 days less than B. Working together, they can do it in ?
a) 14 days
b) 13 days
c) 20 days
d) 15 days

Answer : D

Question. A and B were assigned to do a job for an amount of 1,200. A alone can do it in 15 days, while B can do it in 12 days. With the help of C, they can finish in 5 days. The share of amount that C earns is ?
a) 300
b) 400
c) 500
d) 600

Answer : A

Question.A father can do a job as fast as his two sons working together. If one son does the job in 3 hours and the other in 6 hours, the number of hours taken by the father, to do the job alone is ?
a) 1
b) 2
c) 3
d) 4

Answer : B

Question. If A and B together can complete a piece of work in 15 days and B alone in 20 days, in how many days can A alone complete the work ?
a) 60 days
b) 45 days
c) 40 days
d) 30 days

Answer : A

Question. If 35 men can finish a piece of work in 8 days, then the number of men who can do the same work in 10 days is ?
a) 38
b) 28
c) 19
d) 17

Answer : B

Question. A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day ?
a) 10 days
b) 12 days
c) 15 days
d) 20 days

Answer : C

Question. A can do 1/6 of a work in 5 days and B can do 2/5 of the work in 8 days. In how many days, can both A and B together do the work ?
a) 12 days
b) 13 days
c) 15 days
d) 20 days

Answer : A

Question. If there is a reduction in the number of workers in a factory in the ratio 15 : 11 and an increment in their wages in the ratio 22 : 25, then the ratio by which the total wages of the workers should be decreased is ?
a) 6 : 5
b) 5 : 6
c) 3 : 7
d) 3 :5

Answer : A

Question.20 men working 8 hours per day can complete a piece of work in 21 days. How many hours per day must 48 men work to complete the same job in 7 days ?
a) 12
b) 20
c) 10
d) 15

Answer : C

Question. 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ?
a) 50 days
b) 45 days
c) 40 days
d) 35 days

Answer : C

Question. x does 1/4 of a job in 6 days. y completes rest of the job in 12 days. Then x and y could complete the job together in ?
a) 9 days
b) 9 and 3/5 days
c) 8 and 1/8 days
d) 7 and 1/3 days

Answer : B

Question. A and B together can do a piece of work in 9 days. If A does thrice the work of B in a given time, the time A alone will take to finish the work is ?
a) 4 days
b) 6 days
c) 8 days
d) 12 days

Answer : D

Question. 12 men and 16 boys can do a piece of work in 5 days; 13 men and 24 boys can do it in 4 days, then the ratio of the daily work done by a man to that of a boy is ?
a)2 : 1
b) 3 : 1
c) 1 : 3
d) 5 : 4

Answer : A

Question. If 10 men can do a piece of work in 12 days, the time taken by 12 men to do the same piece of work will be ?
a) 12 days
b) 10 days
c) 9 days
d) 8 days

Answer : B

Question.If 20 women can lay a road of length 100m in 10 days. Then 10 women can lay the same road of length 50 m in ?
a) 20 days
b) 15 days
c) 5 days
d) 10 days

Answer : D

Question. If A and B together can complete a work in 18 days, A and C together in 12 days and B and C together in 9 days, then B alone can do the work in ?
a)18 days
b) 24 days
c) 30 days
d) 40 days

Answer : B

Question. A can do a piece of work in 12 days and B in 24 days. If they work together, in how many days will they finish the work ?
a) 12 days
b) 20 days
c) 15 days
d) 8 days

Answer : D

Question. A and B together can finish a job in 24 days, while A, B and C together can finish the same job in 8 days. C alone will finish the job in ?
a) 12 days
b) 14 days
c) 16 days
d) 24 days

Answer : A

Question. A man is twice as fast as a woman and a woman is twice as fast as a boy in doing a work. If all of them, a man, a woman and a boy can finish the work in 7 days, in how many days a boy will do it alone ?
a) 49
b) 7
c) 6
d) 42

Answer : A

Question. A is 30% more efficient than B, and can alone do a work in 23 days. The number of days, in which A and B, working together can finish the job is ?
a) 11 days
b) 13 days
c) 20 days
d) 21 days

Answer : B

Question.8 workers can build a wall 18 m long, 2 m broad and 12 m high in 10 days, working 9 hours a day. Find how many workers will be able to build a wall 32 m long, 3 m broad and 9 m high in 8 days working 6 hours a day ?
a) 16
b) 20
c) 30
d) 10

Answer : C

Question. 4 mat-weavers can weave 4 mats in 4 days. At the same rate how many mats would be woven by 8 mat-weavers in 8 days ?
a) 4
b) 8
c) 12
d) 16

Answer : D

Question. A can do a piece of work in 4 days and B can do it in 12 days. In how many days will they finish the work, both working together ?
a) 4 days
b) 6 days
c) 2 days
d) 3 days

Answer : D

Question. Two workers A and B are engaged to do a piece of work. A working alone would take 8 hours more to complete the work than when work together. If B worked alone, would take 4 and 1/2 hours more than when work together. The time required to finish the work together is ?
a) 5 hours
b) 4 hours
c) 8 hours
d) 6 hours

Answer : D

Question. A and B can do a piece of work in 20 days and 12 days respectively. A started the work alone and then after 4 days B joined him till the completion of the work. How long did the work last ?
a) 10 days
b) 20 days
c) 15 days
d) 6 days

Answer : A

Question. 20 men can do a piece of work in 18 days, They worked together for 3 days, then 5 men joined them. In how many more days is the work completed ?
a) 15
b) 12
c) 14
d) 13

Answer : B

Question.If 12 carpenters working 6 hours a day can make 460 chairs in 240 days, then the number of chairs made by 18 carpenters in 36 days each working 8 hours a day is ?
a) 92
b) 132
c) 138
d) 126

Answer : C

Question. If 5 men or 7 women can earn 5,250 per day, how much would 7 men and 13 women earn per day ?
a) 11,600
b) 11,700
c) 16,100
d) 17,100

Answer : D

Question. 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 : B

Question. Sunil completes a work in 4 days, whereas Dinesh completes the work in 6 days. Ramesh works 1 and 1/2 times as fast as Sunil. The three together can complete the work in ?
a) 1 and 5/12 days
b) 1 and 5/7 days
c) 1 and 3/8 days
d) 1 and 5/19 days

Answer : D

Question. A can do a piece of work in 18 days. He worked at it for 12 days and B finished the remaining work in 8 days. B alone can do the whole work in ?
a) 16 days
b) 24 days
c) 28 days
d) 29 days

Answer : B

Question. If 1 man or 2 women or 3 boys can complete a piece of work in 88 days, then 1 man, 1 woman and 1 boy together will complete it in ?
a) 36 days
b) 42 days
c) 48 days
d) 54 days

Answer : C

Question. A can do a work in 10 days and B in 20 days. If they together work on it for 5 days, then the fraction of the work that is left is ?
a) 3/4
b) 4/3
c) 3/20
d) 1/4

Answer : D