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A swimming pool is open for 7 1/2 hours during a day. The pool keeps one lifeguard on duty at a time, and each lifeguard's shift is 1 1/2 hours long.
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A swimming pool is open for 7 1/2 hours during a day. The pool keeps one lifeguard on duty at a time, and each lifeguard's shift is 1 1/2 hours long.

User Jude Fisher
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2 votes
There are 5 shifts because 7 1/2 divided by 1 1/2 equals 5.
User Iafisher
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3 votes
You will need 5 lifeguards a day
User Unplug
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