document.write( "Question 1140225: One pump can empty the town swimming pool in 7h less time than a second pump can. Together they empty the pool in 12h. How long would it take the larger pump alone to empty it. \n" ); document.write( "

Algebra.Com's Answer #760717 by ikleyn(52803) $\"\"$ $\"About$

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document.write( "Considering rate of work of separate pumps and their combined rate, you get this basic equation\r\n" );
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document.write( " +  = ,\r\n" );
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document.write( "where x is the time for the larger (=for the faster) pump.\r\n" );
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document.write( "Solve it for x, which is the value under the question.\r\n" );
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document.write( "The solution is reducing the problem to a quadratic equation.\r\n" );
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document.write( "The way to do it is to multiply both sides of the given equation by 12x*(x+7).\r\n" );
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\n" ); document.write( "\n" ); document.write( "To see many similar solved problems, look into the lesson\r
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