180km
60/(1/3)=180
一辆摩托车1又3分之1小时行驶60千米,占全程的3分之1.全程是多少千米怎样做
一辆摩托车1又3分之1小时行驶60千米,占全程的3分之1.全程是多少千米怎样做
数学人气：409 ℃时间：2019-11-23 05:37:25
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