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OpenStudy (anonymous):
You went snow skiing for 6 hours. You skied at an average rate of 30 miles per hour and the ski lift took you back up the hill at a rate of 10 miles per hour. If your overall average rate was 23 miles per hour, how many hours did you actually spend skiing?
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OpenStudy (perl):
Let X = time on ski lift. Y = time skiing on slope
OpenStudy (perl):
distance = rate * time X * 10 + Y*30 = 6*23 X + Y = 6
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