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OpenStudy (anonymous):
Kim rode her bike at a rate of 24km/h to the post office and 16km/h back home. If her trip to the post office and back took a total of 75 minutes, how far does Kim live from the post office?
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OpenStudy (anonymous):
t = d/r Let d be the distance to the post office. Solve the following for d:\[\frac{ d}{24}+\frac{d}{16}=\frac{75}{60}\]d = 12 km
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