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【OG20-P178-207题】
Last year the price per share of Stock X increased by k percent and the earnings per share of Stock X increased by m percent, where k is greater than m. By what percent did the ratio of price per share to earnings per share increase, in terms of k and m ?
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(1+K%)/(1+m%)-1
=(100+K)%/(100+m)%-1
=(100+k-100-m)%/(100+M)%
=(k-m)/(100+m)
=100(k-m)/(100+m) %选D
题目讨论 (10条评论)

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1048993hyug
p对e涨的比率
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0 回复 2022-10-16 01:10:49
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啥时候上岸
((X*(1+K%))/(Y*(1+M%))-X/Y)/(X/Y) 第一步把底下X/Y倒过来乘上去,就化简为 ((1+K%))/((1+M%))-1 把1通分为 1+M%,左右相减就化简为 (K%-M%)/(1+M%) 观察选项,要继续化简为选项的格式,上下都提%出来靠近选项,变为 ((K—M)%)/((100+M)%) D选项正确,因为再乘100,消掉了分母的百分号,最后变为 (100(K-M))/(100+M)%
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0 回复 2022-10-03 00:30:22
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啥时候上岸回复啥时候上岸
在word上是用分号打出来的,这里没法显示, 最后的那个% 百分号是整体的%,也就是在分子上的%, 显示的格式看着是跑到底下了
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0 回复 2022-10-03 00:34:48
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啥时候上岸
弱弱地觉得底下好几个留言错了吧。 By what percent did (the ratio )(of price per share to earnings per share) increase, in terms of k and m ? 问的是今年:价格/earning的这个比率 vs 去年“ 价格/earning的比率,增长了多少百分比。 去年的价格设为X,earning设为Y,则去年的比率是X/Y; 今年的价格是X*(1+k%), 今年的earning是 Y*(1+M%)最后的式子是: (新比率——旧比率)➗旧比率; 最后化简为D选项。 D选项是设置了难度的,需要认真看一下变形。留言不好打出来,大家仔细算就行
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0 回复 2022-10-03 00:02:25
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642662lcxtv回复啥时候上岸
看前面都不知道在说啥 看到你的就明白了!!
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0 回复 2022-11-15 16:38:40
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240946sjjt
这道题的中文意思是什么呀
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0 回复 2022-08-19 00:31:51
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我必须上分
(price-earning)/earning
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0 回复 2022-01-19 15:07:14
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斗牛梗今天学习了吗
A增加了k%,B增加了m%, 求A/B的比率(和先前比)增加了百分之几 设原来A的量为a,B的量为b,原先比率A/B=a/b ①。(胆大的高手其实都直接设1) 后来比率=(1+k%)a/(1+m%)b② 所求值=(②-①)/①即为答案。
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0 回复 2021-11-05 19:41:28
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贾思敏
By what percent did the ratio of price per share to earnings per share increase, in terms of k and m ? (price-earning)/earning
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0 回复 2021-09-24 18:15:30
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如果有时间的话我也能做对
=(100+K)%/(100+m)%-1 =(100+k-100-m)%/(100+M)% 解析里面这一步是怎么进化得出的?能不能多写几步我看不懂?附带解释
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0 回复 2021-07-13 23:26:36
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如果有时间的话我也能做对
去年增长了k,是较前年的基础上增长了?还是看不懂。
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0 回复 2021-07-10 19:08:45
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451431chao
题目要求就是 “价格:收入”…没看懂,反过来了
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0 回复 2020-10-12 18:06:30