质疑OG18 Data Sufficiency #310

DannnnnyZhu · 发表于 2018-3-19 05:37:26

At the beginning of the year, the Finance Committee and the Planning Committee of a certain company each had n members, and no one was a member of both committees. At the end of the year, 5 members left the Finance Committee and 3 members left the Planning Committee. How many members did the Finance Committee have at the beginning of the year?

(1) The ratio of the total number of members who left at the end of the year to the total number of members at the beginning of the year was 1:6.

(2) At the end of the year, 21 members remained on the Planning Committee.

AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
DEACH statement ALONE is sufficient.
EStatements (1) and (2) TOGETHER are NOT sufficient.

d答答案是D。
但是对于statement#2，我们无法知道有多少人加入了Finance Committee，怎么就能得出原本就是21+3=24呢？难道我们默认没有人会加入committee吗？
希望有大牛出来解答一下

吳縣大 · 发表于 2018-3-19 05:59:35

I can't give standard explanation, but only my humble opinion as follows:

the verb "remained" refers to those who were in the committee at the beginning of the year and still were in the committee at the end of the year.

Therefore we don't need to consider the possibility that someone else might join the committee in the middle of the year. Those who joined in the middle of the year were not counted into the number 21.

DannnnnyZhu · 发表于 2018-3-20 02:12:26

吳縣大发表于 2018-3-19 05:59
I can't give standard explanation, but only my humble opinion as follows:

the verb "remained" refer ...

谢谢你的回复！
仔细一想你的说法也是有道理的，看来我还得继续练习和总结。

梦季 · 发表于 2018-6-8 01:37:42

看一下！

质疑OG18 Data Sufficiency #310

所属分类: GMAT考试

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