document.write( "Question 1056785: One pump can empty the pool in 36 hours. The second pump is twice faster. After both pumps, working together emptied 1/3 of a pool the second pump broke. The first pump finished the job. How long did it take to empty the pool? \n" ); document.write( "

Algebra.Com's Answer #671844 by josgarithmetic(39617) $\"\"$ $\"About$

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document.write( "WHICHPUMP    RATE\r\n" );
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document.write( "FIRSTPUMP     \r\n" );
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document.write( "SECONDPUMP    \r\n" );
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document.write( "COMBINED     \r\n" );
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\n" ); document.write( "\n" ); document.write( "The pumps in arrangement used, emptied 1 pool. Volume unit is in \"pools\".\r
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\n" ); document.write( "\n" ); document.write( " $\"system%28%281%2F36%2B1%2F18%29%2At=1%2F3%2C%281%2F36%29%2Ax=2%2F3%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "total time to do all the emptying would be $\"t%2Bx\"$ ; and each variable is solvable. \n" ); document.write( "

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