SOLUTION: An inlet pipe on a swimming pool can be used to fill the pool in 6 hours. The drain pipe can be used to empty the pool in 8 hours. If the pool is 1/2 filled and then the inlet pipe
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-> SOLUTION: An inlet pipe on a swimming pool can be used to fill the pool in 6 hours. The drain pipe can be used to empty the pool in 8 hours. If the pool is 1/2 filled and then the inlet pipe
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Question 1158068: An inlet pipe on a swimming pool can be used to fill the pool in 6 hours. The drain pipe can be used to empty the pool in 8 hours. If the pool is 1/2 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool? Answer by ikleyn(52756) (Show Source):
As the condition says, the tank is half filled, and of its volume should be filled.
The combined net inflow of the two pipes (inlet and drain) is
= = = of the tank volume per hour.
So, with two pipes opened, the filling of the rest half of the tank volume will take = = 12 hours. ANSWER
