Determine the average speed of car for the trip


Sally travels by car from one city to another. She drives for 28.0 min at 81.0 km/h, 53.0 min at 30.0 km/h, and 18.0 min at 22.0 km/h, and she spends 7.0 min eating lunch and buying gas.

Determine the average speed for the trip.

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Physics: Determine the average speed of car for the trip
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