公交车共有多少张座位?

  • 时间:2020-05-20 15:29:31
  • 分类:数学世界
  • 阅读:143 次

数学题:公共汽车从八佰伴开出时,一人一座无站客,车上还空2张座位。到达商业大厦时有百分之二十的乘客下车,同时又有8人上车,这时正好坐满座位无站客。公交车共有多少张座位? 求解

数学题解答:此题关键是弄清那下车的20%的乘客到底是多少人?

当一些人下车后,8人上车,然后坐无虚席,说明在这8人上车之前,正好有8个空位,也就是说下车的人数是:

8 - 2 = 6(人)

这6人占座位总数的20%,所以原来乘客人数就是:

6 ÷ 20% = 30(人)

车上座位总数是:

30 + 2 = 32(张)

答:公交车共有32张座位。

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