GMAT OG2019 数学DS新题第243题(附解析)

涵盖超2000分钟的GMAT考试讲解视频,可反复回看。了解详情
专业GMAT模考系统,24小时资深讲师在线答疑。点击注册

243. In a recent town election, what was the ratio of the number of votes in favor of a certain proposal to the number of votes against the proposal ?

(1) There were 60 more votes in favor of the proposal than against the proposal.

(2) There were 240 votes in favor of the proposal.

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.

词汇知识

ratio  n. 比率,比例

votes  n. 选票;选举;得票数

in favor of  有利于;支持;赞同

题目大意

在最近一次城镇选举中,赞成某项提案的票数与反对该提案的票数之比是多少?

(1) 赞成提案的票数比反对提案的票数多60票。

(2) 有240票赞成提案。

解题思路

要知道赞成票数和反对票数之比,就要知道赞成票数和反对票数是多少,或者知道他们之间比的关系。

(1) 赞成票比反对票多60,无法求出他们的票数或者他俩之间比的关系,条件不充分;

(2) 只知道240赞成票,无法求出他们的票数或者他俩之间比的关系,条件不充分;

(1)+(2),设赞成票是240,则反对票是240 - 60 = 180票,所以赞成票:反对票= 240:180 = 4:3,条件充分。

正确答案: C

2019年GMAT考试资料下载_备考资料下载

最新GMAT备考资料,扫二维码关注欧米官方微信,微博,群内随时发放备考资料,群内杀G伙伴互相解惑!
群内随时发放备考资料,群内杀G伙伴互相解惑!
圈子
关注微信公众号
2018年GMAT换库汇总
2018托福雅思考试时间