Question

If 6 men and 8boys can do a work in 10 days while 26 men and 48 boys can do in 2 days

Answer 1

26 men and 48 boys can do a piece of work in 2 days. It means that the work requires the efforts of 26x2 = 52 man-days and 48x2 = 96 boy-days. So the time taken by 15 men = 52 man-days/15 men = 3 + 7/15 days and the time taken by 20 boys = 96 boy-days/20 boys = 4.8 days.