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
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Algebra.Com's Answer #846118 by mccravyedwin(407) $\"\"$ $\"About$

You can put this solution on YOUR website!
A bathroom tub will fill in 15 minutes with both faucets open and the stopper in
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There are 4 15-minute periods in an hour, so in an hour the faucets will\r\n" );
document.write( "have poured out 4 tub-fulls of water.

With both faucets closed and the stopper removed, the tub will empty in 20
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There are 3 20-minute periods in an hour, so in an hour the unstopped hole will\r\n" );
document.write( "have drained out 3 tub-fulls of water.

How long will it take for the tub to fill if both faucets are open and the
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So in an hour, 4 tub-fulls of water will have been poured into the tub, and 3\r\n" );
document.write( "tub-fulls of water will have drained out of the tub, so just enough water will\r\n" );
document.write( "remain to fill up 4-3=1 tub-full.Answer: 1 hour.\r\n" );
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document.write( "Edwin \n" );
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