王叔叔的手表

  • 时间:2020-03-30 18:18:31
  • 分类:数学世界
  • 阅读:77 次

王叔叔有一只手表,他发现手表比家里的闹钟每小时快30秒,而闹钟比标准时间每小时快30秒。王叔叔的手表与标准时间一昼夜会相差多少秒?

(答案是不是相差0秒呢?不是的哦,两次参照的时间是不同的,第一次是与闹钟比,第二次是与标准时间比,也就是单位“1”不同。)

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