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A Popular web site states that a 130 pound person will burn 472 cal/hr bicycling (moderate effort) and 649 cal/hr rock climbing (ascending). Alexandra (who happens to weigh 130 pounds) has decided to start a training program bicycling for 45 minutes, 3 times/week as well as rock climbing for 1.5 hours every Saturday. How many extra calories will Alexandra burn in 8 weeks of training? What percentage of those calories are from bicycling?

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