Mathematics, 02.10.2019 19:30 885122bah

Starting at home, ishann traveled uphill to the grocery store for 12 minutes at just 15 mph. then he traveled back home along the same path downhill at a speed of 30 mph. what is his average speed for the entire trip from home to the grocery store and back?

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Starting at home, ishann traveled uphill to the grocery store for 12 minutes at just 15 mph. then he...