Question

Brandy's time card showed that she worked 20 hours worth of life-guarding at the pool. If each shift only lasts 45 of an hour, how many shifts did Brandy work?

Answer 1

25

Explanation:

(20 hours)/(4/5 hour/shift) = 20·5/4 shifts = 25 shifts

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You can divide the number of hours by the length of a shift to find the number of shifts. The above includes the units analysis, so you can see how that can work.