题库搜索>问题求解PS-17739
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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?
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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
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2022-11-18 19:51:06
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
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2022-10-09 11:45:52
322766nyzl
做這樣的題目最好就畫個16格 ， 就會很清晰了
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2022-07-09 23:19:05
ziqi
2比1反对
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2022-06-26 16:33:08
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
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2022-02-11 15:19:05
虫0515
设总人数为18就很好算啦
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2021-12-19 21:39:32
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
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2021-12-09 15:02:54
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.。。
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2021-10-30 17:34:23
最喜欢汉汉啦
真无语啊出题人你ne
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2021-09-04 09:59:22
贾思敏
妈的当时没读懂题意
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2021-08-27 17:48:29
400473wdoj
有没有跟我一样 在思考弃票
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2021-07-07 15:28:50
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
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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
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2020-11-02 10:19:18
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）
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2019-10-18 22:52:16
265611yraoq回复leeleeleee
为什么是反对：同意=2:1 谢谢
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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
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2019-11-24 21:14:23
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