Question

8 women or 6 men can finish a piece of construction work in 12 days. 4 women and 9 men will finish the same work in ___days.

Answer 1

8 women = 6 men

1 woman = $\frac{6}{8}$ men

4 women = $\frac{6\times 4}{8}$ = 3 men

4 women and 9 men = 3 men + 9 men = 12 men

Given that

6 men finish a work in 12 days

1 man will finish a work in 12 x 6 days

12 men will finish a work in $\frac{12\times 6}{12}$days = 6 days