数学题：甲乙分别从A，B两地同时出发相向而行，他们到达A、B两地的中点C地时都会提速20%。当甲到达B地时，乙过C且距离A地还有660米。问当甲到达C地时，乙距离C地多少米? 求教各位亲！

解答如下：

660÷(1+1+20％)

这个老师的思路，我认为比较好理解：一半的路是原速，一半的路是加速了20%。

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