SOLUTION: If it takes a bathtub ten minutes to drain and twelve minutes to empty, how long would it take the bathtub to fill if the drain was accidentally left open?

Question 391160: If it takes a bathtub ten minutes to drain and twelve minutes to empty, how long would it take the bathtub to fill if the drain was accidentally left open?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
If it takes a bathtub ten minutes to drain and twelve minutes to empty, how long would it take the bathtub to fill if the drain was accidentally left open?
..
It must be 10 minutes to fill
filling 10 minutes
1/10 of filling in 1 minute
...
draining 12 minutes
1/12 of the draining in 1 minute
..
1/10-1/12 =filling done in 1 minute when drain is open.
(6-5)/60
= 1/60
..
when drain is open 1/60 of the filling is done in 1 minute.
so it will take 60/1 minutes to fill the tub with drain open.
...
m.ananth@hotmail.ca
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