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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):
Distance from home to post office: D Total time = D/24+D/16 = 5/4 5D/48=5/4 D=12 12km
OpenStudy (anonymous):
how did you u get 5/4
OpenStudy (anonymous):
75 minutes = 5/4 hours
OpenStudy (anonymous):
don't need to answer this anymore
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