Mathematics, 15.07.2019 23:30 jakails828
Atruck with a heavy load drove from boston to new york at 45 mph. after unloading, it returned from new york to boston at a speed of 65 mph. what was its average speed for the whole trip?
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Atruck with a heavy load drove from boston to new york at 45 mph. after unloading, it returned from...
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