document.write( "Question 1207781: A bathroom tub will fill in 15 minutes with both faucets open and the stopper in place. With both faucets closed and the stopper removed, the tub will empty in 20 minutes. How long will it take for the tub to fill if both faucets are open and the stopper is removed?\r
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\n" ); document.write( "\n" ); document.write( "My equation is this:\r
\n" ); document.write( "\n" ); document.write( "(x/15) + (x/20) = 1\r
\n" ); document.write( "\n" ); document.write( "You say?
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Algebra.Com's Answer #845860 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Your work shows a big mistake with sign. \r
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\n" ); document.write( "\n" ); document.write( "DRAINING is one direction. FILLING is the opposite direction!\r
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\n" ); document.write( "\n" ); document.write( "Filling the tub is POSITIVE. Draining the tub is NEGATIVE!\r
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\n" ); document.write( "\n" ); document.write( "Fill rate is described as \"1%2F15\" tub per minutes.
\n" ); document.write( "Draining rate is described as \"1%2F20\" tub per minutes and in the OPPOSITE direction.\r
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\n" ); document.write( "\n" ); document.write( "Drain open and both faucets opened, \"%281%2F15-1%2F20%29x=1\", x being time in minutes for
\n" ); document.write( "the 1 tub to become filled.\r
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\n" ); document.write( "\n" ); document.write( "\"%283%2A5%2A4%29%281%2F15-1%2F20%29x=3%2A5%2A4\"\r
\n" ); document.write( "\n" ); document.write( "\"%284-3%29x=60\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28x=60%29\"--------sixty minutes
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