SOLUTION: 4 people can paint 5 walls in 39 minutes. How many minutes will it take for 6 people to paint 9 walls?

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Question 731168: 4 people can paint 5 walls in 39 minutes.
How many minutes will it take for 6 people to paint 9 walls?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
4*39=156 man minutes for 5 walls
156/5 man minutes per wall
156/5*9/6= 46.8 minutes