document.write( "Question 1140868: A new type of pump can train a certain pool in 4 hours. An older pump can drain a pool in 6 hours. How long will it take both pumps working together to drain the pool? Do not do any rounding. \n" ); document.write( "
Algebra.Com's Answer #761380 by josgarithmetic(39617)\"\" \"About 
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\n" ); document.write( ",... pump can trainDRAIN a certain pool in 4 hours....
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\n" ); document.write( "\n" ); document.write( "\"1%2F4%2B1%2F6=1%2Fx\"
\n" ); document.write( "Solve!\r
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\n" ); document.write( "\n" ); document.write( "New pump drains the pool in 4 hours.
\n" ); document.write( "Old pump drains the pool in 6 hours.
\n" ); document.write( "The draining rate unit is in POOLS PER HOUR.\r
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\n" ); document.write( "\n" ); document.write( "The sum of the two individual rates is the rate for the two combined pumps working together.\r
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\n" ); document.write( "\n" ); document.write( "New pump drains pool at \"1%2F4\" \"POOL%2FHOUR\".
\n" ); document.write( "Old pump drains pool at \"1%2F6\" \"POOL%2FHOUR\".
\n" ); document.write( "The TIME for the two working together, you can calculate, and not yet knowing it, you may call this time, x.\r
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\n" ); document.write( "\n" ); document.write( "\"highlight_green%281%2F4%2B1%2F6=1%2Fx%29\";
\n" ); document.write( "Solve for x.
\n" ); document.write( "(Basic Arithmetic)
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