题库搜索>数据充分DS-12130
建议使用官方纸质指南，查看对照完整题目
If 2/5 of the students at College C are business majors, what is the number of female students at College C ?
(1) 2/5 of the male students at College C are business majors.
(2) 200 of the female students at College C are business majors.
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
我有更好的解析 
暂无雷哥网文字解析
假设男女学生各有x,y人
条件1，2单独存在显然不能求出x,y的人数
1）+2）2/5X+200=2/5(x+y)
y=500 也就是female有500人
小良冠二郎
多动手算。
0
0
回复
2023-03-15 13:14:16
Cherry 730
还是要算的 不能自以为一个方程无法解出两个未知数
0
0
回复
2022-08-23 16:04:25
虫0515
没有思路就按部就班的来，设男总数x，女总数y，题干知道总共的商科学生是2/5(x+y)。条件1，商科男有2/5x，没有任何具体数值，不充分；条件2，商科女有200人，不知道商科女占总女生的比例，不充分；条件1+2，总的商科学生数=2/5(x+y)=2/5x+200，x消掉，可以得出y=500
0
0
回复
2021-12-20 17:22:46
421892qccze回复虫0515
实在是没时间老老实实算。。。1+2我只看到了有两个未知数但是只有一个等式。。。大脑直觉告诉我解不出来
0
0
回复
2022-02-10 12:17:42
HelloCandy
还是要动笔算一算啊同志们
0
0
回复
2019-07-17 13:04:36
秋秋要GMAT700呦
居然消掉了……我为了怕未知数太多设男为a 总人数为x 女的为（x-a） 结果反而消不掉了……未知数的设法很重要啊
0
0
回复
2018-08-10 12:33:47
河边柳青青
太贱了，两边竟然消掉了
0
0
回复
2017-11-17 20:59:46
devil的小鱼干
个人认为，”200 of the female students at College C are business majors“意思是说“2/5 of the students at College C are business majors”里女生有200人固定了，那么可以列出等式：2/5(F+M)=2/5M+200，2/5M cancel out之后，得到Female有500人在商科。
0
0
回复
2017-09-09 20:48:10
灰妈
这道题的关键是对于“200 of the female students at College C are business majors.”这句话的理解。私以为 这句话的意思是female students 中有200是business majors。如果理解为 200 female students （一共就200female）都是business majors，应该写作200 female students....are businesss majors.因此我对该题答案存疑。
0
0
回复
2017-07-04 19:05:28
jumyni回复灰妈
我感觉这题也求不出来，我选的E。
0
0
回复
2017-07-06 15:13:18
jumyni回复灰妈
只有我觉得这个选E吗？
0
0
回复
2017-07-06 15:13:34
Jessie34回复灰妈
设男学生总数为x，女学生总数为y 1)+2) 以后得到 2／5 x ＋200 ＝ 2/5 （x＋y) x 两边消掉，可以求y
0
0
回复
2017-11-12 06:18:54
科目：
数据充分DS
来源：
破解版07
题目信息3m26s
平均耗时
57.5%
平均正确率
该题由网友xOQUtS提供
点击上传数据充分DS -17792
Town X has 50,000 residents, some of whom were born in Town X. What percent of the residents of Town X were born in Town X?（1）Of the male residents of Town X, 40 percent were not born in Town X（2）Of the female residents of Town X, 60 percent were born in Town X
数据充分DS -17788
Let S be a set of outcomes and let A and B be events with outcomes in S. Let~B denote the set of all outcomes in S that are not in B and let P(A) denote the probability that event Aoccurs. What is the value of P(A)？(1)P(A∪B)=0.7(2)P(A∪~B)=0.9
数据充分DS -17777
How many people in Town X read neither the World newspaper nor the Globe newspaper?(1)Of the 2, 500 people in Town X, 1,000 read no newspaper.(2)of the people in Town X, 700 read the Globe only and 600 read the World only.
数据充分DS -17099
【OG20-P280-322题】 In the figure above, ifA, B, and C are the areas, respectively, of the three nonoverlapping regions formed by the intersection of two circles of equal area, what is the value of B+C?1.A+2B+C=242.A+C=18 and B=3
数据充分DS -15652
【OG18-P278-316题】How many people are directors of both Company K and Company R ?(1) There were 17 directors present at a joint meeting of the directors of Company K and Company R, and no directors were absent.(2) Company K has 12 directors and Company R has 8 directors.
数据充分DS -17792
Town X has 50,000 residents, some of whom were born in Town X. What percent of the residents of Town X were born in Town X?（1）Of the male residents of Town X, 40 percent were not born in Town X（2）Of the female residents of Town X, 60 percent were born in Town X
数据充分DS -17788
Let S be a set of outcomes and let A and B be events with outcomes in S. Let~B denote the set of all outcomes in S that are not in B and let P(A) denote the probability that event Aoccurs. What is the value of P(A)？(1)P(A∪B)=0.7(2)P(A∪~B)=0.9
数据充分DS -17777
How many people in Town X read neither the World newspaper nor the Globe newspaper?(1)Of the 2, 500 people in Town X, 1,000 read no newspaper.(2)of the people in Town X, 700 read the Globe only and 600 read the World only.
数据充分DS -17099
【OG20-P280-322题】 In the figure above, ifA, B, and C are the areas, respectively, of the three nonoverlapping regions formed by the intersection of two circles of equal area, what is the value of B+C?1.A+2B+C=242.A+C=18 and B=3
数据充分DS -15652
【OG18-P278-316题】How many people are directors of both Company K and Company R ?(1) There were 17 directors present at a joint meeting of the directors of Company K and Company R, and no directors were absent.(2) Company K has 12 directors and Company R has 8 directors.
分享
周末、晚班滚动开班 
24+35+35+6课时 
