document.write( "Question 823811: Pipe A can fill a tank in 6 hours, and pipe B can fill it in 2 hours less time than it takes drainpipe C to empty the tank. With all three pipes open, it takes 3 hours and 20 minutes to fill the tank. How long does it take drainpipe C to empty the full tank with pipes A and B closed. \n" ); document.write( "

Algebra.Com's Answer #495819 by richwmiller(17219) $\"\"$ $\"About$

You can put this solution on YOUR website!
1/6+1/(c-2)-1/c=3/10
\n" ); document.write( "c=5
\n" ); document.write( "check
\n" ); document.write( "1/6+1/3-1/5=3/10
\n" ); document.write( "5/30+10/30-6/30=9/30
\n" ); document.write( "15-6/30=9/30
\n" ); document.write( "ok
\n" ); document.write( "or
\n" ); document.write( "10/3/6+10/3/(c-2)-10/3/c=1
\n" ); document.write( "-10/(3 c)+10/(3 (c-2))+5/9 = 1\r
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