Mathematics
Mathematics, 03.07.2019 21:30, trevorhenyan51

David drove for 3 hours at a rate of 50 miles per hour. for 2 hours at 60 miles per hour and for 4 hours at a rate of 70 miles er hour. what was his constant-speed for the whole journey?


David drove for 3 hours at a rate of 50 miles per hour.for 2 hours at 60 miles per hour and for 4 ho

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