Time & Work

1

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. 4 days
B. 5 days
C. 6 days
D. 7 days

2

One man , 3 women and 4 boys can do a piece of work in 96 hours, 2 men and 8 boys can do it in 80 hours, 2 men and 3 women can do it in 120 hours.  5 men and 12 boys can do it in :

A. 39 1/11 hours
B. 42 7/11hours
C. 43 7/11hours
D. 44 hours.

3

4 men and 6 women can complete a work in 8 days , while 3 men and 7 women can complete if in 10 days. In how many days will  10 women complete it ?

A. 35
B. 40
C. 45
D. 50

4

If 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. 3 : 2
D. 5 : 4

5

5men and 2 boys working together can do four times as much  work as a man and a boy. working capacities of a woman and a boy are in the ratio :

A. 1 : 2
B. 2 : 1
C. 1 : 3
D. 3 : 1