document.write( "Question 692382: one pipe can be used to fill a tank in 48 minutes and another can be used to fill it in one hour and 12 minutes. How will it take to fill the tank if both pipes are used?
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Algebra.Com's Answer #426981 by Edwin McCravy(20060) $\"\"$ $\"About$

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document.write( "We are given the first pipe's filling rate as 1 pool per 48 minutes, or\r\n" );
document.write( " or  or \r\n" );
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document.write( "We let X = the number of minutess it will take both machines working together to\r\n" );
document.write( "process the data.\r\n" );
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document.write( "So we can say that their combined filling rate is 1 pool per\r\n" );
document.write( "X hours, or  or .\r\n" );
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document.write( "The equation comes from:\r\n" );
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document.write( "Solve that by getting an LCD of 240X\r\n" );
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document.write( "Edwin

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