数学题相遇时货车行了240km
- 时间:2020-05-01 11:23:54
- 分类:数学世界
- 阅读:135 次
数学题:客车从甲地到乙地要6小时;货车从乙地到甲地要8小时。两车同时分别从两地出发相对开出,相遇时货车行了240km。甲乙俩地相距多少千米?
数学题解答:在路程一定的情况下,两车的速度比与时间比相反。
所以两车速度比是:客:货=8:6=4:3
两车相遇时所行路程比也是4:3
所以,客车行了:240÷3×4=320(千米)
两地距离:240+320=560(千米)
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