新华书店运来书600本
- 时间:2020-05-20 15:29:31
- 分类:数学世界
- 阅读:104 次
数学题:新华书店运来书600本,卖了2天以后,正好卖了这批书的三分之二。已知第一天卖出的本数与这批书总本书的比是二比五,则第二天卖出多少本?请问一下怎么做?
数学题解答:2天卖了这批书的三分之二,那么两天共卖了:
600 × 2/3 = 400(本)
第一天与总本数的比是2比5,那么第一天卖了:
600 × 2/5 = 240(本)
所以,第二天卖了:
400 - 240 = 160(本)
答:第二天卖了160本。
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