If 3 persons can do 3 times of a particular work in 3 days, then, 7 persons can do 7 times of that work in? Choose the correct choice from the following answers:	A) days	B) days	C) days	D) days	E) days
That is, 1 person can do one time of the work in 3 days.   Therefore, 7 persons can do 7 times work in the same 3 days itself.   days)
<result>B</result>
If 3 persons can do 3 times of a particular work in 3 days, then, 7 persons can do 7 times of that work in?