快车从甲地到乙地要行20小时,慢车从乙地到甲地要行30小时,两车同时从良的开出,相遇时慢车距离甲城1080KM,甲乙两地相距多少千米?
人气:258 ℃ 时间:2019-12-16 21:34:08
解答
1080÷【30/(30+20)】
=1080÷3/5
=1800千米
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