GWD31套中1-19/1-35

stellaleigh

Q35:

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.

Q19:

A total of $60,000 was invested for one year.  But of this amount earned simple annual interest at the rate of x percent per year, and the rest earned simple annual interest at the rate of y percent per year.  If the total interest earned by the $60,000 for that year was $4,080, what is the value of x?

(1)     x = (3/4) y

(2)   The ratio of the amount that earned interest at the rate of x percent per year to the amount that earned interest at the rate of y percent per year was 3 to 2.

以上两题我搜过GWD数学讨论集锦了，没有。请指点！谢谢

hitlzc

又是新的题号不符的。

Q35:
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.

选C

剩下的55%是3个人的。所以中数是3

Q19:
A total of $60,000 was invested for one year.  But of this amount earned simple annual interest at the rate of x percent per year, and the rest earned simple annual interest at the rate of y percent per year.  If the total interest earned by the $60,000 for that year was $4,080, what is the value of x?
(1)     x = (3/4) y
(2)   The ratio of the amount that earned interest at the rate of x percent per year to the amount that earned interest at the rate of y percent per year was 3 to 2.

T*X%+（60000-T）Y%）=4080

（1）  x = (3/4) y
（2）T*X%：（60000-T）Y%=3：2

3个未知数，3个方程，可以解一下，如果有唯一值选C，没有选E。

stellaleigh

以下是引用hitlzc在2006-5-1 16:33:00的发言：

又是新的题号不符的。

Q35:
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.

选C

剩下的55%是3个人的。所以中数是3

Q19:
A total of $60,000 was invested for one year.  But of this amount earned simple annual interest at the rate of x percent per year, and the rest earned simple annual interest at the rate of y percent per year.  If the total interest earned by the $60,000 for that year was $4,080, what is the value of x?
(1)     x = (3/4) y
(2)   The ratio of the amount that earned interest at the rate of x percent per year to the amount that earned interest at the rate of y percent per year was 3 to 2.

T*X%+（60000-T）Y%）=4080

（1）  x = (3/4) y
（2）T*X%：（60000-T）Y%=3：2

3个未知数，3个方程，可以解一下，如果有唯一值选C，没有选E。

谢谢斑竹的回答。有一些小改正，35题应该是剩下45%巴？

另外斑竹列出的方程T怎么理解。我就是题目没怎么看懂，of this amount是指什么？

谢谢

hitlzc

以下是引用stellaleigh在2006-5-1 17:14:00的发言：

谢谢斑竹的回答。有一些小改正，35题应该是剩下45%巴？

另外斑竹列出的方程T怎么理解。我就是题目没怎么看懂，of this amount是指什么？

谢谢

对，是45%。写错了。

但位于整个集合的50%处的是3。

不知道是你打漏了单词，还是题漏了单词。我觉得of this amount前面应该有some,因为后面说the rest

所以分两部分，X rate的为T，剩下的是60000-T