返回列表 发帖

gwd8-30答案为什么不是B呢


Q30:

Number Studying Biology

Number Not Studying Biology

Total

Number of Boys

18

Number of Girls

Total

26

X/2

The table above shows the number of students in a certain high school class who are boys and the number of students in the class who are studying biology. What is the total number of students in the class?

(1) Of the boys in the class, 15 are studying biology.

(2) The number of girls in the class is twice the number of students in the class who are not studying biology.

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.

收藏 分享

继续上题,按照B的意思,可以设number of girls 为x, 则number not

studying biology 为x/2

因为26+x/2=18+x,这样就可以求出答案了.难道不行吗,为什么要选C呢?

TOP

返回列表

站长推荐 关闭


美国top10 MBA VIP申请服务

自2003年开始提供 MBA 申请服务以来,保持着90% 以上的成功率,其中Top10 MBA服务成功率更是高达95%


查看