SOLUTION: It takes 16 minutes to fill a tub with a stopper. It takes 20 minutes to empty a tub without a stopper. How long does it take to fill a tub without a stopper?

Algebra ->  Algebra  -> Rational-functions -> SOLUTION: It takes 16 minutes to fill a tub with a stopper. It takes 20 minutes to empty a tub without a stopper. How long does it take to fill a tub without a stopper?      Log On

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Question 570425: It takes 16 minutes to fill a tub with a stopper. It takes 20 minutes to empty a tub without a stopper. How long does it take to fill a tub without a stopper?
Answer by scott8148(6451) About Me  (Show Source):
You can put this solution on YOUR website!
in the 16 min that it normally takes to fill, 4/5 (16/20) of the tub has drained

so it takes 16 min to fill 1/5 of the tub