Mathematics
Mathematics, 26.07.2019 15:00, arigar

Acar travels from town a to town b at an average speed of 40 miles per hour, and returns immediately along the same route at an average speed of 50 miles per hour. what is the average speed in miles per hour for the round trip?

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Acar travels from town a to town b at an average speed of 40 miles per hour, and returns immediately...

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