Question: Suppose Blake discovered his error (see Exercise 41) after an hour long surf. If he then closed the outlet pipe, how much more time would

Suppose Blake discovered his error (see Exercise 41) after an hour long surf. If he then closed the outlet pipe, how much more time would be needed to fill the pool?

Exercise 41

An inlet pipe can fill Blake’s pool in 5 hr, and an outlet pipe can empty it in 8 hr. In his haste to surf the Internet, Blake left both pipes open

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