document.write( "Question 1155718: An inlet pipe on a swimming pool can be used to fill the pool in 26 hours. The drain pipe can be used to empty the pool in 30 hours. If the pool is 1/5 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 #778349 by josgarithmetic(39617)\"\" \"About 
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If 1/5 of pool is filled, the still need the combined pipes to fill 4/5 of the pool.\r
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\n" ); document.write( "\n" ); document.write( "\"%281%2F26-1%2F30%29x=4%2F5\"; solve for x, the time to do this.
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\n" ); document.write( "\"x=156\"
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