题库搜索>问题求解PS-17739
建议使用官方纸质指南,查看对照完整题目
When 2/9 of the votes on a certain resolution have been counted, 3/4 of those counted are in favor of the resolution. What fraction of the remaining votes must be against the resolution so that the total count will result in a vote of 2 to 1 against the resolution?
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
设total count为m,the remaining votes中的against比例为a
根据题意
①同意的人有两部分:2/9*m*3/4+7/9*m*(1-a)
②反对的人也有两部分:2/9*m*1/4+7/9*m*a
最终投票结果为2:1反对
即②:①=2:1
(2/9*m*1/4+7/9*m*a)/(2/9*m*3/4+7/9*m*(1-a))=2/1
m消掉,解得a=11/14
檀健次的小娇妻不认输
555忘记了还有一部分没数的
学习才能配白敬亭
题目读不懂直接白瞎:总投票数使得最终投票以2:1反对提案,而不是什么投票数比反对数2:1。反对人数应当占2/3
322766nyzl
做這樣的題目最好就畫個16格 , 就會很清晰了
ziqi
2比1反对
196309fxht
2/9 * 1/4 = 1/18的人已经投了反对,总共需要2/3的人反对 所以还需要2/3 - 1/18 = 11/18的人投反对票 (11/18) / (7/9) = 11/14
虫0515
设总人数为18就很好算啦
Crystal8
看最后一个句子看了好久,还是没懂,但是猜懂了它的意思will result in a vote (of 2 to 1) against the resolution? 从语法角度分析 of 2 to 1是修饰语,先不看她,然后最后一句的意思就是vote against the resolution ,投票结果是反对的,所以of 2 to 1的意思就是
234805hfuug
vote of 2 to 1 against the resolution没看懂,是在说反对的是2,支持的是1.。。
最喜欢汉汉啦
真无语啊出题人你ne
贾思敏
妈的当时没读懂题意
400473wdoj
有没有跟我一样 在思考弃票
501475ulxp回复400473wdoj
题目用的是votes投票数,应该就不用考虑弃票的问题了吧
0
0
回复
2021-12-12 17:03:42
206787q
重点在于读懂题意,最后一句表达的意思是最终以2:1的比例否决改方案,也就是说反对票占总票数的2/3, 只要写出否决占比的表达式就行:2/9*1/4 + 7/9*a = 2/3
leeleeleee
2/9的总票数中,同意的占3/4--同意的占总票数(2/9*3/4=1/6),问,反对的票要在剩下的票(7/9)占多少,才能让反对的总票数是同意的2倍 反对:同意=2:1, 所以反对的票要占总票的2/3,同意的占1/3。 已知同意票已经有1/6了,所以剩下的1/6就在7/9的总票数里,因为问的是占剩余(7/9)票的比例,所以(1/6)/(7/9)=3/14,求的是反对票(1-3/14=11/14)
265611yraoq回复leeleeleee
为什么是反对:同意=2:1 谢谢
1
0
回复
2019-10-27 20:38:11
Isabel730回复leeleeleee
个人觉得题目的意思是result in agianst the resolution最终结果反对这个方案,所以是反对:同意=2;1
1
0
回复
2019-11-24 21:14:23
科目:
问题求解PS
来源:
难题300
3m36s
平均耗时
56.2%
平均正确率
该题由网友m2gkJOw提供
点击上传问题求解PS -17858
A merchant purchased a jacket for $60 and then determined a selling price that equaled the purchase price of the jacket plus a markup that was 25 percent of the selling price. During a sale, the merchant discounted the selling price by 20 percent and sold the jacket. What was the merchant's gros...
问题求解PS -17857
Store N gives a 50 percent discount on the list price of all its items and Store W gives a 60 percent discount on the list price of all its items. If the list price of the same item is 20 percent higher in Store W, what percent (more or less) of the selling price in Store N is the selling price of t...
问题求解PS -17854
A store bought 5 dozen lamps at $30 per dozen and sold them all at $15 per lamp. The profit on each lamp was what percent of its selling price?
问题求解PS -17849
The table above shows the percent of change from the previous month in Company X's sales for February through June of last year. A positive percent indicates that Company X's sales for that month increased from the sales for the previous month, and a negative percent indicates that Company X...
问题求解PS -17845
The annual stockholders' report for Corporation X stated that profits were up 10 percent over the previous year, although profits as a percent of sales were down 10 percent. Total sales for that year were approximately what percent of sales for the previous year?
问题求解PS -17858
A merchant purchased a jacket for $60 and then determined a selling price that equaled the purchase price of the jacket plus a markup that was 25 percent of the selling price. During a sale, the merchant discounted the selling price by 20 percent and sold the jacket. What was the merchant's gros...
问题求解PS -17857
Store N gives a 50 percent discount on the list price of all its items and Store W gives a 60 percent discount on the list price of all its items. If the list price of the same item is 20 percent higher in Store W, what percent (more or less) of the selling price in Store N is the selling price of t...
问题求解PS -17854
A store bought 5 dozen lamps at $30 per dozen and sold them all at $15 per lamp. The profit on each lamp was what percent of its selling price?
问题求解PS -17849
The table above shows the percent of change from the previous month in Company X's sales for February through June of last year. A positive percent indicates that Company X's sales for that month increased from the sales for the previous month, and a negative percent indicates that Company X...
问题求解PS -17845
The annual stockholders' report for Corporation X stated that profits were up 10 percent over the previous year, although profits as a percent of sales were down 10 percent. Total sales for that year were approximately what percent of sales for the previous year?