慢车速度是快车的1/2
行同样的路程,慢车所用时间就是快车的2倍
慢车行全程需要：3×2+3=9小时
一列快车和一列慢车同时从甲乙两地出发相向而行,3小时相遇.以知慢车的速度是快车的2分之1.问慢车行玩全
一列快车和一列慢车同时从甲乙两地出发相向而行,3小时相遇.以知慢车的速度是快车的2分之1.问慢车行玩全
问慢车行玩全程要几小时
问慢车行玩全程要几小时
数学人气：325 ℃时间：2019-10-19 22:06:55
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