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五年级第3讲第5课，要想孩子数学好，解决问题时可学习这种办法
五年级第3讲第5课，A、B两车同时从甲、乙两站相对开出，两车第一次相遇在距离甲站50千米处，相遇后两车以原速继续行驶，各自到达乙、甲两站后立即沿原路返回，第二次相遇在距离乙站30千米处，如此继续行驶下去，则第三次相遇在何处？
五六年级数学391/688
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