5 men and 2 boys working together can do four times as much work as a man and a boy. Working capacities of a man and a boy are in the ratio : `1:2` b. `2:1` c. `3:1` d. `1:3`

5 men and 2 boys working together can do four xx as much work as a man and a boy. Working capacities of a man and a boy are in the ratio : 1:2 b.2:1 c.3:1 d.1:3

If 7 men and 4 women working together, can do five times as much work per hour as one man and one woman together, then the ratio of the work done by a man and that of a woman for a given time is:

If 7 men and 4 women working together can fo five times as much work per hour as one man and one woman together then the ratio of the work done by a man and that of woman for a given time is :

If the work done by 8 men and 4 boys in 1 day is 7 times the work done by 1 man and 1 boy, then compare the work done by 1 man and 1 boy in 1 day?

15 men, 18 women and 12 boys working together earned Rs. 2070: If the daily wages of a man, a woman and a boy are in the ratio of 4 : 3 : 2, the daily wages (in Rs.) of 1 man, 2 women and 3 boys are 135 b. 180 c. 2205 d. 240

2 men and 3 boys can do a work in 10 days, 3 men and 2 boys can do a work in 8 days . In how many days 2 men and 1 boy can do the same work ?

If 12 men and 16 boys can do a piece of work in 5 days and, 13 men and 24 boys can do it in 4 days, how long will 7 men and 10 boys take to do it ?