SOLUTION: Susan can paint a room in 6 hours. John can paint the same room in 9 hours. How much time will it take for them to paint the room working together?
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Question 264556: Susan can paint a room in 6 hours. John can paint the same room in 9 hours. How much time will it take for them to paint the room working together? Answer by checkley77(12844) (Show Source):