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Mathematics, 12.02.2021 04:40 karenaustin5

​Joe, a​ superhero, finishes a meal at a restaurant only to find​ he's left his wallet at home. Not wanting to reveal his secret identity to his​ date, he excuses himself and slips outside. Dashing home at ​mph, he snatches his wallet from his nightstand and races back to the restaurant at mph. Discounting the time it took to find his​ wallet, what was his average speed for the​ trip?

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