SOLUTION: If 2 students can clean 5 classrooms in 4 hours, how long would it take for 40 students to clean 40 classrooms

Algebra ->  Rate-of-work-word-problems -> SOLUTION: If 2 students can clean 5 classrooms in 4 hours, how long would it take for 40 students to clean 40 classrooms       Log On


   

Question 798346: If 2 students can clean 5 classrooms in 4 hours, how long would it take for 40 students to clean 40 classrooms
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
8 man hours for 5 rooms
5/8 man hours per room
40/5/8=40*8/5=64 man hours
64/40=8*8/5*8=8/5 hours
= 1 3/5 hours
=1 hours 36 minutes.