07年1月mathNEW机经讨论稿第11篇完(520-585)1.26 7:30

rio

我早就考过了...

cwcc

559.250 zip code 在a,b,c,d
four places; A is twice as many as B, A is 4 times as many as C, A is
4/3 times as many as D; 150,000 people in the B area, 25% buy one
product, 问in B area, 平均1个zip code serve 多少人?

经过634题的补充，此题已更改，答案：7500。150000*25%/（250*1/5）其中1/5是B区zip code的份额。

同585

奇怪。这个题目，我算了以后A的ZIP CODE 的份额是2500*12/37 不知道怎么算出那个B的1/5的啊？

rio

以下是引用cwcc在2007-1-29 1:10:00的发言：
559.250 zip code 在a,b,c,d
four places; A is twice as many as B, A is 4 times as many as C, A is
4/3 times as many as D; 150,000 people in the B area, 25% buy one
product, 问in B area, 平均1个zip code serve 多少人?

经过634题的补充，此题已更改，答案：7500。150000*25%/（250*1/5）其中1/5是B区zip code的份额。

同585

奇怪。这个题目，我算了以后A的ZIP CODE 的份额是2500*12/37 不知道怎么算出那个B的1/5的啊？

请在计算

QiiQ

559.250 zip code 在a,b,c,d
four places; A is twice as many as B, A is 4 times as many as C, A is
4/3 times as many as D; 150,000 people in the B area, 25% buy one
product, 问in B area, 平均1个zip code serve 多少人?
    

经过634题的补充，此题已更改，答案：7500。150000*25%/（250*1/5）其中1/5是B区zip code的份额。

同585

请问红色部分的计算，我算出来怎么是750?

rio

以下是引用QiiQ在2007-1-29 6:12:00的发言：

559.250 zip code 在a,b,c,d
four places; A is twice as many as B, A is 4 times as many as C, A is
4/3 times as many as D; 150,000 people in the B area, 25% buy one
product, 问in B area, 平均1个zip code serve 多少人?
 

经过634题的补充，此题已更改，答案：7500。150000*25%/（250*1/5）其中1/5是B区zip code的份额。

同585

请问红色部分的计算，我算出来怎么是750?

一样的，两道题数字差了一点，但方法一样

sweetlychee

RIO,sorry,我讲废话了，你的鸡早就熟了．哈哈：）

 

thanks very much!

lifechaser

542.股票分红的问题，说0.80元的时候分给股东多少，超过的话，分多少。有200股，问能分多少银子。

A certain company expects quarterly earnings of $0.80 per share of stock, half of which will be distributed as dividends to shareholders while the rest will be used for research and development.  If earnings are greater than expected, shareholders will receive an additional $0.04 per share for each additional $0.10 of per share earnings.  If quarterly earnings are $1.10 per share, what will be the dividend paid to a person who owns 200 shares of the company’s stock?

 A.        $92

B.        $96

C.      $104
                

D.     $120

E.      $240

这提怎么是C啊？光（1。1÷2）×200就等于110了。。。烦劳大家解释一下。。。谢谢！

weijbqs

请NN分析535题：

n+k和n+7的最大公约数>1？ (1) n =6 (2) k = 6

答案：B。

2）=〉N+6 和N+7 为相邻数，根据FF老师的讲课，差为M的自然数，其公因子为差的约数，则两者的最大供约数只有1。所以2）不充分。我的分析对吗？

chrisanna

thank you

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