SOLUTION: A bathroom tub will fill in 15 minutes with both faucets open and the stopper in place. With both faucets closed and the stopper removed, the tub will empty in 20 minutes. How long

Question 348183: A bathroom tub will fill in 15 minutes with both faucets open and the stopper in place. With both faucets closed and the stopper removed, the tub will empty in 20 minutes. How long will it take for the tub to fill if both faucets are open and the stopper is removed?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
after 20 min , a full tub of water has drained out
___ but at the same time , 4/3 of a tub has run in (20/15)

so in 20 min , the tub is 1/3 full
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