AB两地的路程是550千米
- 时间:2020-05-20 15:28:23
- 分类:数学世界
- 阅读:146 次
数学题:AB两地的路程是550千米,甲乙两车从两地同时相对而行,行了4小时没相遇,还剩20%。已知甲车每小时行60千米,求乙车每小时行多少千米?
数学题解答:设乙车每小时行x千米。
60×4+4x=550×(1-20%)
240+4x=440
4x=200
x=50
答:乙车每小时行50千米。
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