during a family car trip, a family travels for 1 hour at 70 miles per hour then the family travels for 2 more hours at 55 miles per hour. What is the family's average speed during the trip?

during a family car trip a family travels for 1 hour at 70 miles per hour then the family travels for 2 more hours at 55 miles per hour What is the familys aver class=


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