AMC 8 2022 Problem 16
AMC8 2022 年第 16 题
方程与不等式★★★☆☆
Four numbers are written in a row. The average of the first two is 21, the average of the middle two is 26, and the average of the last two is 30. What is the average of the first and last of the numbers?
四个数写在一行。前两个数的平均值是 21，中间两个数的平均值是 26，最后两个数的平均值是 30,。问第一个数和最后一个数的平均值是多少？
- A.24
- B.25
- C.26
- D.27
- E.28
正确答案 · Correct Answer
B
解析 · Solution
解析整理中
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