document.write( "Question 1163560: a new type of pump can drain a pool in 6 hours. an older pump can drain the pool in 12 hours. how long will it take both pumps working together to drain the pool? \n" ); document.write( "
Algebra.Com's Answer #787687 by josgarithmetic(39625)\"\" \"About 
You can put this solution on YOUR website!
\"1%2F6%2B1%2F12=1%2Fx\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%2F12%2B1%2F12=1%2Fx\"\r
\n" ); document.write( "\n" ); document.write( "\"3%2F12=1%2Fx\"\r
\n" ); document.write( "\n" ); document.write( "\"1%2F4=1%2Fx\"\r
\n" ); document.write( "\n" ); document.write( "\"highlight%28x=4%29\"\"hours\"
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