40 men can finish a work in 25 days. In how many days, 25 men will finish the same work?

40 men can finish a work in 25 days. In how many days, 25 men will finish the same work?

Explanation

40 men finish the work in 25 days

Total work = 40 men * 25 days = 1000 man-days

Now, 25 men will finish the work:

1000 man-days / 25 men = 40 days