Posted by mary on Friday, July 24, 2009 at 12:29pm.
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
SOLUTION:
10 men can do the work in 10 days,
1 man ,, ,, ,, ,, ,, =100 days
.'.100 men ,, ,, ,, ,, ,,=1 day