document.write( "Question 1064590: An Olympic sized pool can be filled by pipe a in 18 hours and pipe b in 12 hours.there is also a drain pipe that drains the entire pool in 8 hours. if the values of pipe a and pipe b and the drain pipe are open how long will it take to fill the pool? round to the nearest tenth of an hour if necessary.\r
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Algebra.Com's Answer #679663 by ikleyn(52778)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The pipe A fills \"1%2F18\" of the pool volume per hour.\r\n" );
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document.write( "The pipe B fills \"1%2F12\" of the pool volume per hour.\r\n" );
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document.write( "The pipe C drains \"1%2F8\" of the pool volume per hour.\r\n" );
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document.write( "When all 3 pipes work, they fill \"1%2F18+%2B+1%2F12+-+1%2F18\" = \"1%2F72\" of the pool volume per hour.\r\n" );
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document.write( "Hence, it will take 72 hours to fill the pool if all 3 pipes are open.\r\n" );
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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
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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 \"Rate of work and joint work problems\" of the section \"Word problems\".\r
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