SOLUTION: A swimming pool can be filled by one pipe in 4 hours and emptied by another in 5 hours. The water is allowed to run for 2 hours with both pipes open and then the outlet is closed

Question 752337: A swimming pool can be filled by one pipe in 4 hours and emptied by another in 5 hours. The water is allowed to run for 2 hours with both pipes open and then the outlet is closed. How long will it take the tank to fill
Answer by josgarithmetic(39616) (Show Source): You can put this solution on YOUR website!
Filler, job per hour.
Emptier, job per hour.
Both pipes open at the same time, job per hour =

job per hour.

Is this enough to continue solving? Rate * Time = Job.
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