SOLUTION: if it takes sally 4 hours to paint a house and it take john 6 hours to paint the same house, then how long will it take both of them at the same time?
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Question 23731: if it takes sally 4 hours to paint a house and it take john 6 hours to paint the same house, then how long will it take both of them at the same time? Answer by Paul(988) (Show Source):
You can put this solution on YOUR website! Sally paints 1/4 of house in one hour
John paints 1/6 of house in one hour
1/4 + 1/6 = 3/12 + 2/12
5/12 = 12/5 = 2.4
Hence together they paint the house in 2.4 hours.
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