document.write( "Question 841532: pump A can fill a pool in 11 hrs and pump B can empty the same pool in 4 hrs. accidentally, both the pumps started at the same time. how long it will take to empty the pool? \n" ); document.write( "
Algebra.Com's Answer #506967 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Rate of emptying is \"1%2F4-1%2F11\" pools per hour.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%281%2F4%29%2811%2F11%29-%281%2F11%29%284%2F4%29\"
\n" ); document.write( "\"7%2F44\" pools per hour or \"44%2F7=6%263%2F7\" HOURS per POOL.
\n" ); document.write( "
\n" );