- 精华
- 1
- 积分
- 1639
- 经验
- 1639 点
- 威望
- 163 点
- 金钱
- 163 ¥
- 魅力
- 163
|
求NN帮忙,PREP一道题目
132.14175-!-item-!-187;#058&010326
If the drama club and music club are combined, what percent of the combined membership will be male?
(1)Of the 16 members of the drama club, 15 are male.
(2)Of the 20 members of the music club, 10 are male.
【答案】E
【思路】
(1) 只给了drama club 里其中的会员有 16人,而这16人里有 15人是male, 推得 1位是女的,但是没给drama club 总共会员人数, insufficient
(2)也是同样的道理, insufficient
(1)+ (2)仍然无法知道总共会员人数,无法知道percent of the combined membership will be male, insufficient
我选择了C,思路:会员人数16+20 MALE: 15+10
MALE的比例可以求得
为啥答案是E???求解答。。。很急啊 |
|