document.write( "Question 1152897: A tank can be filled by a pipe in 2.0 h and emptied by another pipe in 3.0h. How much time will be required to fill an empty tank if both are running?
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Algebra.Com's Answer #775009 by ikleyn(52908)\"\" \"About 
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document.write( "First pipe fills  \"1%2F2\"  of the tank volume each our.\r\n" );
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document.write( "Second pipe drains \"1%2F3\"  of the tank volume each our.\r\n" );
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document.write( "The net inflow rate to the tank is the difference  \"1%2F2\" - \"1%2F3\" = \"3%2F6+-+2%2F6\" = \"1%2F6\"  of the tank volume per hour.\r\n" );
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document.write( "It means, that the tank be filled in 6 hours with two pipes working together.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is a standard and typical joint work problem.\r
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\n" ); document.write( "\n" ); document.write( "There is a wide variety of similar solved joint-work problems with detailed explanations in this site.  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
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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
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this textbook under the topic
\n" ); document.write( "\"Rate of work and joint work problems\"  of the section  \"Word problems\".\r
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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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