AMC 8 1988 Problem 18

AMC8 1988 年第 18 题

统计与数据图表★★★☆☆

Problem The average weight of 6 boys is 150 pounds and the average weight of 4 girls is 120 pounds. The average weight of the 10 children is

6 个男孩的平均体重是 150 磅，4 个女孩的平均体重是 120 磅。这 10 个孩子的平均体重是

A. $135\text{ pounds}$
B. $137\text{ pounds}$
C. $138\text{ pounds}$
D. $140\text{ pounds}$
E. $141\text{ pounds}$

正确答案 · Correct Answer

C

解析 · Solution

解析整理中

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