10 men can do a piece of work in 10 days.how many days can 100 men take to do the same amount of work?

Answer 1

If 10 men can do a piece of work in 10 days, then 100 men will do the work in 10/100, or 1/10 of the time.

10days * 1/10 = 1 day

Answer 2

SOLUTION:
10 men can do the work in 10 days,
1 man ,, ,, ,, ,, ,, =100 days
.'.100 men ,, ,, ,, ,, ,,=1 day