[求助] OG 12 上的一道 DS 求教

slipknotjr

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.

答案给的 C  .

可我觉得体重并没有提到 那剩下的 40% 的projects 有多少人参加，我怎么能求出 median 呢？希望大家指点