document.write( "Question 1169037: A certain pipe can fill up a tank 2 hours faster than onother pipe. It takes 3 hours for both pipes to fill up the same tank. In how many hours would the first pipe fill up the tank? \n" ); document.write( "

Algebra.Com's Answer #793698 by ikleyn(52810) $\"\"$ $\"About$

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document.write( "     +  = \r\n" );
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document.write( "         +  = \r\n" );
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document.write( "    3*(x+2)  + 3x = x*(x+2)\r\n" );
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document.write( "    3x  + 6  + 3x = x^2 + 2x\r\n" );
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document.write( "    x^2 - 4x - 6 = 0\r\n" );
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document.write( "    Solve using the quadratic formula.\r\n" );
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