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Time and Work Questions Answers
If 5 men and 8 boys can complete a work in 15 days, and 5 men and 3 boys in 20 days, then 12 boys can complete the same work in
15 days
20 days
25 days
36 days
25 days
15 men can do a piece of work in 20 days. In how many days 25 men finish the same work?
2
20
12
15
12
If 3 men or 6 boys can do a piece of work in 20 days, how many days will 6 men and 8 boys take to do the same work?
6
8
10
12
6
3 men = 6 boys or 1 man = 2 boys
6 men + 8 boys = boys or 20 boys
if 6 boys can do a job in 20 days
20 boys can do a job in
A can copy 75 pages in 25 hours, A and B together can copy 135 in 27 hours. In what time can B copy 42 pages?
17 hours
27 hours
21 hours
31 hours
21 hours
A can copy 3 pages in one hour whereas both can copy 5 pages (135 + 27) in one hour, meaning that, B can copy only 2 pages in one hour. Thus B can copy 42 pages in 21
A can do a piece of work in days and B is 5 days. They work together for 2 days and then A leaves B to finish the work alone. How long will B take to finish it?
days
7 days
days
3 days
days
2 days work done by A and B
Remaining work
This of the work can be finished in , i.e.,
A can do a piece of work in 20 days, B in 15 days and C in 12 days. How soon can the work be done if A is assisted by B on one day and by C on the next alternately?
14 days
10 days
8 days
6 days
8 days
(A + B)'s 1 days's work of the work i.e.,
(A + C)'s 1 days's work of the work i.e., of the work.
2 days work done
Since of work done in 2 days, so whole of the work done in 8 days
A can do a piece of work in 14 days and B in 21 days. They begin together but 3 days before the completion of the work. A leaves off. In how many days is the work complete?
10 days
days
15 days
7 days
days
(A + B)'s 1 day's work
At the end, B works for 3 days so work done by B in 3 days .
Remaining work which is to be done by A and B.
of the work (A + B) can do in 1 day
of work (A + B) can do is
Time to complete the work
days
If the wages of 45 woman amount to Rs. 15525 in 48 days, how many men must work 16 days to receive Rs. 5750. The daily wages of a man being double that of a woman?
30 men
15 men
25 men
20 men
25 men
45 women can earn Rs. in 16 days, i.e., Rs. 5175
or men can earn in 16 days Rs. 5175.
Now Rs. 5175 is the earning for men
Rs. 5750 is the earning for
If 5 men and 2 boys working together can do four times as much work per hour as a man and a boy together. Compare the work of a man with that of a boy?
1 : 2
2 : 1
1 : 3
1 : 4
2 : 1
Required ratio = 2 : 1
A can do a piece of work in 40 days. He worked at it for 5 days, then B finished it in 21 days. The number of days that A and B will take together to finish the same work is
25 days
15 days
12 days
10 days
15 days
Work done by A in 5 days
Remaining 7/8 th of the work is done by B in 21 days.
B's 1 day's work
A + B's 1 days's work
Both can do it in 15 days.