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A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min at

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A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min at 100.0 km/h, 17.0 min at 90.0 km/h, and 45.0 min at 40.0 km/h and spends 25.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the initial and final cities along the route. km

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