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Average speed = (total distance covered) divided by (time to cover the distance)

Distance in the first 2.5 hours = (2.5 x 60) = 150 miles

Distance in the next 1.5 hours = (1.5 x 75) = 112.5 miles

Total distance = (150 + 112.5) = 262.5 miles

Total time = (2.5 + 1.5) = 4 hours

Average speed = (262.5/4) = 65.625 miles per hour

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14y ago

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