document.write( "Question 388415: a larger pipe can empty a pool for 6 hours A smaller pipe can empty the same pool for 9 hours. How long will it take for both pipes to empty the pool? (Show Your Solution) \n" ); document.write( "
Algebra.Com's Answer #274720 by Alan3354(69443)\"\" \"About 
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The larger empties 1/6 per hour.
\n" ); document.write( "The other empties 1/9 per hour.
\n" ); document.write( "Add those, total per hour.
\n" ); document.write( "The inverse = hours/total.
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