180除2是每小时90千米
180除三分之二是270 为全程
270除90是3小时
一列火车从甲地开往乙地,2小时行了180千米,正好行了全程的3/2.甲乙相距多少?行完全程几小时?
一列火车从甲地开往乙地,2小时行了180千米,正好行了全程的3/2.甲乙相距多少?行完全程几小时?
快,要列式!
快,要列式!
数学人气：890 ℃时间：2019-11-24 07:01:25
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