SOLUTION: It takes painter A 3 hours to paint a certain are of a house. It takes painter B 5 hours to do the same job. How long would it take them, working together, to do the painting job?
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Question 331457: It takes painter A 3 hours to paint a certain are of a house. It takes painter B 5 hours to do the same job. How long would it take them, working together, to do the painting job? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A paints 1/3 of the house per hour.
B paints 1/5 of the house per hour.
A & B paint 1/3 + 1/5 per hour = 8/15 houses/hr
--> 15/8 hours/house
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