SOLUTION: An inlet pipe can fill an artificial pond in 60 minutes, while an outlet pipe can empty it in 80 minutes. If both pipes are left on, how long will it take the pond to fill?
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Question 745578: An inlet pipe can fill an artificial pond in 60 minutes, while an outlet pipe can empty it in 80 minutes. If both pipes are left on, how long will it take the pond to fill?
Can you help me set this up and solve please
Answer by savvyhush23(50) (Show Source): You can put this solution on YOUR website!
An inlet pipe can fill an artificial pond in 60 minutes, while an outlet pipe can empty it in 80 minutes. If both pipes are left on, how long will it take the pond to fill?
Let i - rate of inlet pipe and o - rate of outlet pipe
(negative (-) since it is draining the pond)
...both pipes are left on, so together their rate is:
The pond must be fill, so it is 1 complete work.
Formula for work:
So, the time to fill the tank is,
answer: 240 minutes
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