SOLUTION: It takes Mary 4 hours to clean the house. John can clean the house in 6 hours. Working together, how long does it take to clean the house? What formula do you use to solve this pro
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Question 309656: It takes Mary 4 hours to clean the house. John can clean the house in 6 hours. Working together, how long does it take to clean the house? What formula do you use to solve this problem? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 1/4+1/6=1/x
(6+4)/4*6=1/x
10/24=1/x
10x=24
x=24/10
x=2.4 hours working together they can clean the house.
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