SOLUTION: a pool can be filled by one pipe in 20 hours and by a second pipe 60 hours. How long ?
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Question 854113: a pool can be filled by one pipe in 20 hours and by a second pipe 60 hours. How long ?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
How long? very long!
How long is what? the pipe?
How long to drain the pool?
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