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标题: 问涛涛GWD1-26/1-30/1-35 [打印本页]

作者: wkw5336280 时间: 2006-7-28 14:18
标题: 问涛涛GWD1-26/1-30/1-35

Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machine Y. At these rates, if the two machines together produce 5/4 w widgets in 3 days, how many days would it take machine X alone to produce 2w widgets?

A. 4

B. 6

C. 8

D. 10

E. 12

这道题目做不出来，有没有人帮忙讲一下如何计算？？

30.

Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?

(1) She bought $4.40 worth of stamps.

(2) She bought an equal number of $0.15 stamps and $0.29 stamps

这道题目我觉得（1）中0.15X+0.29Y=4.4,X，Y both are positive integer,请问除了用具体数字试以外

有怎么样的好点方法来确定有没有整数解啊？

另外我选了A

答案选D，是不是答案有问题啊？

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.

这道题目答案选了C

但是我觉得题目中的4 or more还有2 or more本身就是一个不确定的数字，最后求出的median也就是

4 or more/2 or more，这样的结果最终没有给出median是多少,所以我觉得选E啊

高手执教

作者: jenniferdsb 时间: 2006-7-28 14:34

楼主，我帮你找到了26，先看看吧

http://forum.chasedream.com/dispbbs.asp?BoardID=22&ID=64046

其实如果你搜一搜会发现很多答案近在眼边哦

作者: hitlzc 时间: 2006-7-28 14:34
http://forum.chasedream.com/dispbbs.asp?boardid=22&id=181798&star=1#181798

作者: hitlzc 时间: 2006-7-28 14:36
我已将标题更改，请以后在标题中以类似的形式写清，以便后来人查询和整理，谢谢配合！

作者: hitlzc 时间: 2006-7-28 14:52
http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=183974&page=1

作者: jenniferdsb 时间: 2006-7-28 16:33

30题的确是选A呀，我的TT GWD答案是A

作者: skx330 时间: 2014-8-22 10:36
What is the median number of employees assigned per project for the projects at Company Z?在Z公司中每个项目被分配的员工数的中数是多少
(1) 25 percent of the projects at Company Z have 4 or more employees assigned to each project.有25%的项目有4个或4个以上的员工
(2) 35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.有35%的项目有2个或2个以下
列表 x>=4    25%
   2<x<4  40%..........这就是中数
   x<=2    35%

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