AMC 8 2007 Problem 7
AMC8 2007 年第 7 题
统计与数据图表★★☆☆☆
The average age of 5 people in a room is 30 years. An 18 -year-old person leaves the room. What is the average age of the four remaining people?
一个房间里 5 个人的平均年龄是 30 岁。一个 18 岁的人离开了这个房间。那么剩下的 4 人平均年龄是多少岁？
- A.25
- B.26
- C.29
- D.33
- E.36
正确答案 · Correct Answer
D
解析 · Solution
解析整理中
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