# SOLUTION: A larger pipe can empty a pool in 6 hrs and a smaller pipe can empty the same pool in 9 hrs. How long will it take both pipes to empty the pool?

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 Question 387668: A larger pipe can empty a pool in 6 hrs and a smaller pipe can empty the same pool in 9 hrs. How long will it take both pipes to empty the pool?Answer by josmiceli(9649)   (Show Source): You can put this solution on YOUR website!Add their rates of emptying to get rate for both In words: {1 pool)/(6 hours) + (1 pool)/(9 hours) = (1 pool)/(x hours) Multiply both sides by It will take 3.6 hrs or 3 hours and 36 minutes