A girl rides her bicycle on a route at constant speeds of 6 mph on level ground, 4 mph uphill, and 12 mph downhill. She reaches her destination in an hour. What is the length of the route. How do you solve this?
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11-02-2011, 02:43 AM #1
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A girl rides her bicycle on a route at constant speeds of 6 mph on level ground, 4 mph uphill, and 12 mph down?
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