There are three ants A, B and C. The ratio of their crawling speed is 8:6:5. They start to crawl along a circle from the same point, at the same time and in the same direction. When they reach the start for the first time synchronously, the crawl is completed. During the process(including the end time), how may times A will catch up with B?
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发表于 2010-3-3 14:55:47
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