Question

(a)
days
If6 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 work will be:
(a) 4 days (b) 5 days (c) 6 days (d) 7 days​

Answer 1

Answer:

6 men and 8 boys can do a piece of work in 10 days. It means that the work requires the efforts of 6x10 = 60 man-days and 8x10 = 80 boy-days. So the time taken by 15 men = 60 man-days/15 men = 4 days and the time taken by 20 boys = 80 boy-days/20 boys = 4 days.