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Mathematics 22 Online
OpenStudy (anonymous):

Marlene rides her bicycle to her friend Jon's house and returns home by the same route. Marlene ride her bike at constant speeds of 9 mph on level ground, 6 mph going uphill and 18 going downhill. If her total riding time was 2 hrs, how far is it to Jon's house. (below is a picture of a trapezoid)

OpenStudy (anonymous):

11 miles to Jon's house

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