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请教几题GWD数学题

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楼主
发表于 2011-8-22 20:42:59 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
1  In Town X, 64 percent of the population are employed, and 48 percent of the population are employed males.What percent of the employed people in Town X are females?
2
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.
3

If x > 0, then 1/[√(2x)+√x] =
4
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.

解题过程及思路,谢谢!


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沙发
发表于 2011-8-22 20:46:25 | 只看该作者
第一题 64-48=16,16除以64=25%
板凳
发表于 2011-8-22 20:47:01 | 只看该作者
第四题,选C,中位数是3
地板
发表于 2011-8-22 20:47:59 | 只看该作者
第三题通分就可以了。上下都乘以根号2x-根号x
5#
 楼主| 发表于 2011-8-22 20:48:19 | 只看该作者
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.
这题是选C吧?
6#
发表于 2011-8-22 20:50:13 | 只看该作者
第二题选C,两个条件同时成立
7#
发表于 2011-8-22 20:50:38 | 只看该作者
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.
这题是选C吧?
-- by 会员 cxks01 (2011/8/22 20:48:19)

A
8#
 楼主| 发表于 2011-8-22 20:58:19 | 只看该作者
第四题,选C,中位数是3
-- by 会员 gmat考750 (2011/8/22 20:47:01)


第2、4题还是不太明白,能详细一点吗?第二题读不太懂题目,X,Y两种利润有什么不同?第4题为什么中位数是3?非常就感谢
9#
 楼主| 发表于 2011-8-22 20:59:56 | 只看该作者
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.
这题是选C吧?
-- by 会员 cxks01 (2011/8/22 20:48:19)


A
-- by 会员 gmat考750 (2011/8/22 20:50:38)



这题答案写D~···是答案错了吗?
10#
发表于 2011-8-22 21:01:36 | 只看该作者
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.
这题是选C吧?
-- by 会员 cxks01 (2011/8/22 20:48:19)



A
-- by 会员 gmat考750 (2011/8/22 20:50:38)




这题答案写D~···是答案错了吗?
-- by 会员 cxks01 (2011/8/22 20:59:56)

OG答案是A你可以找找
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