请教一题

wretdgdh

Q5:

A department manager distributed a number of pens, pencils, and pads among the staff in

the department, with each staff member receiving x pens, y pencils, and z pads. How

many staff members were in the department ?

(1) The numbers of pens, pencils, and pads that each staff member received were in

the ratio 2 : 3 : 4, respectively.

(2) The manager distributed a total of 18 pens, 27 pencils, and 36 pads.

这题的答案是E 我选C

哪个对呢 谢谢

shanxing

以下是引用白衣人在2004-12-2 10:05:00的发言：

偶也选E

你头像好可爱哦！

白衣人

偶也选E

pic100

I choose E.

We do not know exactly how many pen each people have

wretdgdh

糊涂了，到底哪位大虾作的答案正确啊？？

win8009

我觉得选 C 可行。就是（1）（2）联立，

设员工为 X ： 2x :3x:4X=18:27:36 => x=9

himba

选E吧..由2可以得到总共发了多少的pens, pencils, and pads ,加上条件一,设有X个雇员

(2+3+4)X..a=18+27+36

a是一个算每个人分到多少pens, pencils, and pads 的未知数

所以有两个未知数..E