A,B两城市相距980千米,两辆火车同时相向而行,10小时后,两车相遇,快车50千米/小时,
问 ：快车比慢车每小时快几千米?
快车走了50*10=500千米
慢车走了900-500=480千米
慢车也走了10小时
慢车的速度=480/10=48千米/小时
快车比慢车每小时快2千米
英语奥数帮我一下!3qThe distance between city A and city B is 980 km
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