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奥数天天练，很基础的相遇问题，单元考试必考题目，不能丢分哦
11-1：阿飞家和阿虎家相距20千米，周六二人相约一起打游戏，他们同时从家里出发，2小时后在路上相遇。已知阿飞的速度是4千米每小时，请问阿虎的速度是多少？
小学奥数提分天天练32/65
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