SOLUTION: Using a small inlet pipe, it takes 9 hours to fill a pool. Using a large inlet pipe, it only takes 3 hours to fill the same pool. If both are used simultaneously, how long will it
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Question 807645: Using a small inlet pipe, it takes 9 hours to fill a pool. Using a large inlet pipe, it only takes 3 hours to fill the same pool. If both are used simultaneously, how long will it take to fill the pool?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x/3+x/9=1
4x/9=1
4x=9
x=9/4
together 2 1/4 hours
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