document.write( "Question 749029: i need your help with word problem i never seem to understand the this one in particular is giving me trouble\r
\n" ); document.write( "\n" ); document.write( "a swimming pool can be filled in 9 hours and it can be emptied in 12 hours. in error, the drain pipe was left open while attempting to fill the pool. how long did it take to fill the pool? \n" ); document.write( "

Algebra.Com's Answer #455745 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "By itself, the inlet can fill the pool in 9 hours, so it can fill

of the pool in 1 hour. Likewise, the drain can empty

of the pool in 1 hour. Working against one another, the inlet and the drain fill

of the pool in 1 hour. Do the arithmetic and then take the reciprocal to find the total time.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "Egw to Beta kai to Sigma
\n" ); document.write( "My calculator said it, I believe it, that settles it
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$\"The$

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