求一道数学题，一直没懂。求大神指点

gasliyufei · 发表于 2013-5-13 22:46:56

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.
Answer: c
完全不懂怎么做，感觉应该是我理解题意。。中位数怎么可以从中求出呢？

一首简单的越歌 · 发表于 2013-7-15 17:54:43

可以画出一条线段，线段的0%至35%部分代表人数小于等于2，线段的75%到100%代表人数大于等于4，那么夹在35%和75%这部分的人数就只可能是3了，而中位数就是位于50%的位置，即3个人。所以必须利用1和2两个条件才能求解。

enyika2014 · 发表于 2014-10-18 01:18:22

nice............................

czhsc · 发表于 2015-6-8 22:42:16

Mark一下！

415lethe · 发表于 2016-3-19 14:23:00

好吧表示完全没看懂题~~尴尬

[Helr题库] 求一道数学题，一直没懂。求大神指点

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