SOLUTION: 30 men can paint an estate in 48 hours. after working for 20 hours, 6 men left. how much longer did the painting take?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: 30 men can paint an estate in 48 hours. after working for 20 hours, 6 men left. how much longer did the painting take?       Log On


   

Question 904980: 30 men can paint an estate in 48 hours. after working for 20 hours, 6 men left. how much longer did the painting take?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
30*48= 1440 man hours needed
30*20 = 600 man hours used
30*48-30*20= 840 more work to be finished
30-6=24 men available
840/24= 35 hours left
It would have taken 28 hours with all 30 men.