SOLUTION: My son can clean the attic in 4 hours and I can do it in 2 hours. How long would it take if we worked together.
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Question 694276: My son can clean the attic in 4 hours and I can do it in 2 hours. How long would it take if we worked together. Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! My son can clean the attic in 4 hours and I can do it in 2 hours. How long would it take if we worked together.
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Let x = time (hours) for both
then
x(1/4 + 1/2) = 1
x(1/4 + 2/4) = 1
x(3/4) = 1
x(3) = 4
x = 4/3 hours
or
x = 1 hour and 20 minutes
