甲乙两人骑自行车分别从ab两地相对而行,第一次两人在距离b地7千米处相遇甲、乙两人骑自行车分别从A、B两地同时相向而行,第一次两车在距离B地7千米处相遇,相遇后,两人继续向前行驶,辆车

甲乙两人骑自行车分别从ab两地相对而行,第一次两人在距离b地7千米处相遇甲、乙两人骑自行车分别从A、B两地同时相向而行,第一次两车在距离B地7千米处相遇,相遇后,两人继续向前行驶,辆车
甲乙两人骑自行车分别从ab两地相对而行,第一次两人在距离b地7千米处相遇
甲、乙两人骑自行车分别从A、B两地同时相向而行,第一次两车在距离B地7千米处相遇,相遇后,两人继续向前行驶,辆车分别到达目的地B、A两地后立即返回,返回是在距离A地4千米处又相遇,A、B两地的距离是多少?

甲乙两人骑自行车分别从ab两地相对而行,第一次两人在距离b地7千米处相遇甲、乙两人骑自行车分别从A、B两地同时相向而行,第一次两车在距离B地7千米处相遇,相遇后,两人继续向前行驶,辆车
两人共走了三个来回
7×3-4=17（千米）

7+7+7-4=17

7*3-4=17千米，^_^

A、B两地的距离是：
7*3-4=17km .

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