Question

4 men or 5 women can construct a wall in 82 days. How long will it take for 5 men and 4 women to do the same?

Answer 1

According to question,

4 men = 5 women.

So we can say that 1 man = (5/4) women.

So 5 men + 4 women will be reduced to

5*(5/4) women + 4 women = 10.25 women.

Now the question is very simple,

5 women can do the work in 82 days.

So 1 women will do it it 82*5 = 410 days.

And so 10.25 women will do it in 410/10.25 = 40days