In a certain class there are 18 boys and 12 girls. If the class average score for a history exam is 90 and the boys’ average score is 86, what is the girls’ average score? -题库考试答案搜索网

In a certain class there are 18 boys and 12 girls. If the class average score for a history exam is 90 and the boys’ average score is 86, what is the girls’ average score?

单选题

2022-02-22 16:19

A、92
B、93. 5
C、94
D、96
E、96. 5

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正确答案

D

试题解析

Let x represent the girls’ average.

, x=96.

标签：国外英语考试美国学术能力评估考试（SAT）

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