document.write( "Question 1064590: An Olympic sized pool can be filled by pipe a in 18 hours and pipe b in 12 hours.there is also a drain pipe that drains the entire pool in 8 hours. if the values of pipe a and pipe b and the drain pipe are open how long will it take to fill the pool? round to the nearest tenth of an hour if necessary.\r
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Algebra.Com's Answer #679659 by josgarithmetic(39617)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "The reciprocal of that is what the question asks for.\r
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\n" ); document.write( "\n" ); document.write( "Time to FILL the pool using all pipes open, 72 hours.
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