Posted by **juan** on Sunday, October 4, 2009 at 9:32pm.

A person travels by car from one city to another with different constant speeds between pair of cities. She drives for 38.6 min at 87.2 km/h, 10.3 min at 107.9 km/h, and 45.6 min at 45.7 km/h, and spends 17.9 min eating lunch and buying gas.

Find the distance between the initial and final cities along this route. Answer in units of km.

Find the average speed for the trip. Answer in units of km/h.

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