document.write( "Question 923059: An inlet pipe on a swimming pool can be used to fill the pool in 38 hours. The drain pipe can be used to empty the pool in 39 hours. If the pool is 2/3 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool? \n" ); document.write( "
Algebra.Com's Answer #559852 by josgarithmetic(39620)\"\" \"About 
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The job to be done is \"1%2F3\", \"FILL THE POOL\" units.\r
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\n" ); document.write( "Using t for how many hours to fill the partially filled pool.
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