GWD31-10 两条数学求助！！！~~~

dolorez

Q30:
What is the median number of employees assigned per project for the projects at Company Z?
(1)    25 percent of the projects at Company Z have 4 or more employees assigned to each project.
(2)     35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.
    
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.
Q33:    不好意思图打不出来麻烦大家看下啊。。。我数来数去怎么一共九条线出口，在y出去的八条啊。。。                
The figure above represents a system of roads along which traffic flows in the direction indicated by the arrows.  If the traffic were to split evenly at each fork of the road system, what percent of the traffic entering fork C would exit at Y?

A.    87.5%
B.    75%
C.    62.5%
D.    50%
E.    12.5%

dolorez

帮帮忙啊