Two Cyclists Yan and Clancy are in a race. Yan is better on shorter courses and Clancy is better on longer courses. Yan's average speed is given by 30 ?x/10 mph and Clancy's average speed is given by 28 ?x/20 mph, where x is the distance of the race in miles and 0<x less than or equal to 200. What distances could the race be for Clancy to win?
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