Answer:
Option A
Explanation:
$12\times 36$ men can complete the work in $1$ day.
$18\times 6$ women can complete the work in $1$ day.
$12\times 36$ men $=18\times 60$ women $\Rightarrow$ 2 men = 5 women.
Now 8 men + 20 women = (4 $\times$ 5) + 20 women $=20+20$ = 40 women 18 women complete the work in 60 days.
40 women's 20 days work $= \frac{(40\times 20)}{(18\times 60)}$ $= \frac{20}{27}$
Remaining work $=\frac{7}{27}$
$18\times 60$ women do 1 work in 1 day
so that 1 woman does $=\frac{1}{(18\times 60)}$ work in 1 day
In 4 days, 1 woman does $=\frac{4}{(18\times 60)}$ $=\frac{1}{(18\times 15)}$ work
$\frac{7}{27}$ Work is done by $\frac{(18\times 15\times 7 )}{27}$ = 70 women.
