The swimming pool is open 7 1/2 hours a day. One lifeguard is on duty at a time, each working a 1 1/2 hour shift. How many lifeguards are needed per day?

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Answer:

Hello! You'r answer would be 5. I got this answer because by dividing 7 1/2, 1 1/2 is how much a lifeguard works. So 5 lifeguards is equal to 7 1/2.

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