document.write( "Question 1129103: A new type of pump can drain a certain pool in 9 hours. An older pump can drain the pool in 11 hours. How long will it take both pumps working together to drain the pool? \n" ); document.write( "

Algebra.Com's Answer #745661 by MathTherapy(10552) $\"\"$ $\"About$

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A new type of pump can drain a certain pool in 9 hours. An older pump can drain the pool in 11 hours. How long will it take both pumps working together to drain the pool?
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BE FOREWARNED!!
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document.write( "He's at it AGAIN!!! Yeah, the one with ARITHMETIC in his name. How IRONIC!! This is WRONG, so act as though no-one responded.
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