document.write( "Question 1115559: Pump A can empty a pool in 20 hrs. and pump B can empty it in 24 hrs. Working together, how long will it take to empty the pool? \n" ); document.write( "
Algebra.Com's Answer #730392 by ikleyn(52790)\"\" \"About 
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document.write( "Pump A drains \"1%2F20\" of the tank volume per hour.\r\n" );
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document.write( "Pump B drains \"1%2F24\" of the tank volume per hour.\r\n" );
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document.write( "Working together, they drain  \"1%2F20%2B1%2F24\" = \"6%2F120%2B5%2F120\" = \"11%2F120\" of the tank volume per hour.\r\n" );
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document.write( "It means that two pipes will drain the tank in  \"120%2F11\" hours = \"10\"\"10%2F11\" hours.\r\n" );
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\n" ); document.write( "It is a typical and standard 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
\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
\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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