<PRE><B>Question 61841</B>
Time taken by 9 employees to complete the task = 15 days.

3 more employees mean that there are 12 employees now.

Time and work are inversely proportional.
So time taken by 12 employees = (9 * 15)/12
                               =  11.25 days.

WE conclude that more employees need less time to complete the work. 



Good Luck!!!</PRE>