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:152 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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