document.write( "Question 1129779: Pipe A can fill a tank in five hours pipe B can fill it in two hours less than it takes pipe C, a drain pipe ,to empty the tank. with all three pipes open it takes three hours to fill the tank. how long would it take pipe C to empty it? \n" ); document.write( "
Algebra.Com's Answer #746394 by josgarithmetic(39617)\"\" \"About 
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c, the time for pipe C to drain the tank if pipe C is working alone\r
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