Mathematics, 01.11.2020 21:20 trujillo03

John went on a bike ride to the store 4 miles away. If it took John 3/10 of an hour to get there and 1/2 of an hour to get back, what was his average rate of speed (miles per hour) for the entire trip?

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John went on a bike ride to the store 4 miles away. If it took John 3/10 of an hour to get there and...