[求助]两道math jj 谢谢啦

kingue2

383． when hardpaper sale 100,000, some softpaper are produced.  when the total number of sale is 200,000, the price of softpaper is 1/3 of the hardpaper.,the ratio of the number of hardpaper to the number of softpaper is 3:1. the question is :what is the fraction of  the revenue of sale of softpaper to the total revenue when the total number of sale is 300,000.
答案: 1/10?

384．K^4 is dividle by 32, the remainder is 0. what is the remainder when K is dividled by 32
I 2
II 4
III 6
答案: 4?

chejw

以下是引用kingue2在2007-11-27 16:00:00的发言：

383． when hardpaper sale 100,000, some softpaper are produced.  when the total number of sale is 200,000, the price of softpaper is 1/3 of the hardpaper.,the ratio of the number of hardpaper to the number of softpaper is 3:1. the question is :what is the fraction of  the revenue of sale of softpaper to the total revenue when the total number of sale is 300,000.
答案: 1/10?

384．K^4 is dividle by 32, the remainder is 0. what is the remainder when K is dividled by 32
I 2
II 4
III 6
答案: 4?

both agree

wslinfeng

383． when hardpaper sale 100,000, some softpaper are produced.  when the total number of sale is 200,000, the price of softpaper is 1/3 of the hardpaper.,the ratio of the number of hardpaper to the number of softpaper is 3:1. the question is :what is the fraction of  the revenue of sale of softpaper to the total revenue when the total number of sale is 300,000.
答案: 1/10?

这道题目的具体解法不是很懂，主要是when hardpaper sale 100,000, some softpaper are produced是什么意思。是说H已经卖了10w刀的时候，soft才开始生产吗？

后面的能理解，H的sales是S的9倍，所以S占整个的1、10，但是买到30w刀的时候数量是不是有变化啊，我得理解是这样的：

买到10w的时候，S刚开始生产，也就是还没有开始卖，当买到10w的时候，s买了1数量的咚咚，同理，再增加10w的时候，s也只能卖1数量的东东，那么他占的份额应该是(1w＋1w)/30w，等于1/15，不知道这样理解对不对。

第二：agree