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Mathematics, 12.07.2019 12:30 mistymjoy

Andy's average driving speed for a 4-hour trip was 45 miles per hour. during the first 3 hours he drove 40 miles per hour. what was his average speed for the last hour of his trip?

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Andy's average driving speed for a 4-hour trip was 45 miles per hour. during the first 3 hours he dr...

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