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标题: [求助]GWD3-12 [打印本页]

作者: ruhudisbfks 时间: 2008-6-4 10:16 标题: [求助]GWD3-12

Q12:

Division R of Company Q has 1,000 employees. What is the average (arithmetic mean) annual salary of the employees at Company Q?

(1) The average annual salary of the employees in Division R is $30,000.

(2) The average annual salary of the employees at Company Q who are not in Division R is $35,000.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

答案为什么是E,我觉得应该是C,能帮我指出错在哪里吗?

作者: johnsonwxjs 时间: 2008-6-4 21:22

其他部门的人数不知道, 没法求总人数.

你选C的理由是不是(30000+35000)/2 呀? 这样算是不行的, 因为两部分人数不一定相等

作者: ruhudisbfks 时间: 2008-6-5 20:07

谢谢,我突然想明白了,快考试了,脑子也开始糊涂了

作者: kenisjacque 时间: 2008-6-6 20:03

我也犯了一样的错！

好亲切，虽然过去快3年了。mark...

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