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Mario is driving at a constant rate. So far, he has driven 330 miles in 6 hours. If he continues to drive at the same rate, how much longer will it take Mario to drive a total of 715 miles? What is Mario's unit rate of travel in miles

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Kalahira
Distance covered by Mario in 6 hours is 330 miles. Then, Average speed of Mario is 330 miles divided by 6 hours = 55 miles per hour so to drive a total distance of 715 miles, it would take him ( 715 miles divided by 55 miles per hour) hours i.e., 13 hours so Mario will have to drive for 7 more hours to complete a total distance of 715 miles.

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