If 6 men and 8 women can do a piece of work in 10 days while 26 men and 48 women can do the same in 2 days, the time taken by 15 men and 20 women in doing the same type of work will be?  Select the correct option:
A) 5 B) 4 C) 6 D) 7 E) 8
Let 1 man's 1 day's work = x and 1 women's 1 day's work = y.   Then, 6x + 8y = 1 and 26x + 48y = 1 .   10 2   Solving these two equations, we get : x = 1 and y = 1 .   100 200   (15 men + 20 women)'s 1 day's work = 15 + 20 = 1 .   100 200 4   15 men and 20 women can do the work in 4 days.   Hence Answer will be 4
<result>B</result>
If 6 men and 8 women can do a piece of work in 10 days while 26 men and 48 women can do the same in 2 days, the time taken by 15 men and 20 women in doing the same type of work will be?