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When using the big hose and the small hose, Sam can fill her pool in 15 minutes. The small hose when used alone takes 60 minutes to fill the pool. How long would it take Sam to fill her pool using only the big hose?

Don't understand how to set up equation.
8 years ago

Answers

Scott
in 15 min the small hose fills 1/4 of the pool, while the big hose fills the other 3/4

3/4 in 15 min means 20 min to fill
8 years ago

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