If 5 persons can do 5 times of a particular work in 5 days, then, 3 persons can do 3 times of that work in? Choices:
A) 2 days	B) 3 days	C) 5 days	D) 7 days	E) 9 days
That is, 1 person can do one time of the work in 5 days.   Therefore, 3 persons can do 3 times work in the same 5 days itself.   5 days)
<result>C</result>
If 5 persons can do 5 times of a particular work in 5 days, then, 3 persons can do 3 times of that work in?