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Unitary Method

A partially f...

Question

A partially filled pool contains 600 gallons of water. A hose is turned on, and water flows into the pool at the rate of 8 gallons per minute. How many gallons of water will be in the pool after 70 minutes?

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Solution

In $70$ minutes, gallons of water flowing into the pool $= 70 \times 8 = 560$
So total water $= 600 + 560 = 1160$ gallons

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