AMC 8 2013 Problem 16

AMC8 2013 年第 16

比与比例★★★☆☆
A number of students from Fibonacci Middle School are taking part in a community service project. The ratio of 8-th -graders to 6-th -graders is 5:3, and the ratio of 8-th -graders to 7-th -graders is 8:5. What is the smallest number of students that could be participating in the project?
中学的一些学生正在参加一项社区服务项目。其中,八年级和六年级学生的个数之比为 5:3,八年级学生和七年级学生的个数之比是 8:5.那么参加这个项目的学生数最少是多少个?
  1. A.16
  2. B.40
  3. C.55
  4. D.79
  5. E.89

正确答案 · Correct Answer

E

解析 · Solution

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