AMC 8 2004 Problem 9
AMC8 2004 年第 9 题
统计与数据图表★★☆☆☆
Problem The average of the five numbers in a list is $54$. The average of the first two numbers is $48$. What is the average of the last three numbers?
一列 5 个数的平均值为 54。已知前 2 个数的平均值为 48。则最后 3 个数的平均值是多少？
- A.55
- B.56
- C.57
- D.58
- E.59
正确答案 · Correct Answer
D
解析 · Solution
解析整理中
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