document.write( "Question 1061193: A hot water faucet fills a sink in 5 minutes, while a cold water faucet fills it in 4 minutes, and a drain empties it in 2 minutes, Ifthe sink is full, and both faucets and the drain are open, how long does it take to empty the sink? \n" ); document.write( "

Algebra.Com's Answer #675990 by ikleyn(52873) $\"\"$ $\"About$

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\n" ); document.write( "A hot water faucet fills a sink in 5 minutes, while a cold water faucet fills it in 4 minutes, and a drain empties it in 2 minutes,
\n" ); document.write( "If the sink is full, and both faucets and the drain are open, how long does it take to empty the sink?
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\n" ); document.write( "\n" ); document.write( "I think that the faucets fill a $\"highlight%28tank%29\"$ , as well as the drain empties a the $\"highlight%28tank%29\"$ (and not a sink).\r
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document.write( "At given conditions, 5-minute faucet fills  of the tank volume per minute,\r\n" );
document.write( "while a 4-minute faucet fills  of the tank volume per minute.\r\n" );
document.write( "A drain empties  of the tank volume per minute.\r\n" );
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document.write( "So, the tank loss  =  =  of the volume per minute.\r\n" );
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document.write( "Hence, it will take 20 minutes to empty the tank.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "For a wide variety of similar solved joint-work problems with detailed explanations see the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Using Fractions to solve word problems on joint work,\r
\n" ); document.write( "\n" ); document.write( "    - Solving more complicated word problems on joint work,\r
\n" ); document.write( "\n" ); document.write( "    - Selected joint-work word problems from the archive \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
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\n" ); document.write( "\n" ); document.write( "Read them and get be trained in solving joint-work problems.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the topic \"Rate of work and joint work problems\" of the section \"Word problems\".\r
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