求助~数学GWD6---19

littlewest310

俺数学不好，望指教~~~
可是我怎么觉得应该选D呢~~~~~晕菜啊
Q19:
At a certain company, 25 percent of the employees are male and 50 percent of the employees are sales staff.  What is the number of employees at this company?
(1)  Exactly 7 of the employees at the company are males who are sales staff.
(2）There are 16 more female employees than male employees at the company.
    
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.

littlewest310

来顶顶~@@~

QueenJ420

选B 吧~ 画一个表格 A求不出来的

littlewest310

选B 吧~ 画一个表格 A求不出来的

-- by 会员 QueenJ420 (2011/8/30 20:54:13)

是不是不能看做有12.5%的sales staff是male呀~

sunhailong

楼主思路不对吧，如果设公司男为X，由题设就是女的是3X，总数是4X了，条件一是在细分SS和总数，以及SS中男女的多少，条件不足，所以只看条件2就好了。

王小睿

a打死也推不出来的，选b吧

yjhbill

b
a推不出来
b，设男的有x个，则3x=x+16，x=8，全公司人数就是4*8=32