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?
Choose the correct option:
A) 4
B) 5
C) 6
D) 7
E) 8
Let 1 men's 1 day work = x and 1 boy's 1 day work = y.   Then, 6x + 8y = 1/10 and 26x + 48y = 1/2   Solving these two equations, we get:   x = 1/100 and y = 1/200   (15 men + 20 boys)'s 1 day work = (15/100 + 20/200) = 1/4   15 men and 20 boys can do the work in 4 days.   4nswer:4
<result>A</result>
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?