题库搜索>数据充分DS-18269
At a certain clothing store, customers who buy 2 shirts pay the regular price for the first shirt and a discounted price for the second shirt. The store makes the same profit from the sale of 2 shirts that it makes from the sale of 1 shirt at the regular price. For a customer who buys 2 shirts, what is the discounted price of the second shirt?
(1) The regular price of each of the 2 shirts the customer buys at the clothing store is $16.
(2) The cost to the clothing store of each of the 2 shirts the customer buys is $12.
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
我有更好的解析 
暂无雷哥网文字解析
不妨设第一件售价为P，成本价为C，求第二件的售价（折扣价）。
根据题意，卖两件和一件利润相同，可得折扣价即为成本价C。
1告知P，2告知C。
显然1不充分，2充分。
「注意」discounted price和discount不同，题目并不是求第一件售价减第二件售价的差值。
499685skw
卖两件（其中一件折扣）与卖一件的利润相同，即第二件完全没有在赚钱，就是cost本身的价格。
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2022-09-25 21:16:08
499685skw回复499685skw
discounted price不是差值
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2022-09-25 21:17:03
499685skw
我的思路漏了一个环节：我将discounted price设为Dp,将其视为了一个独立的未知数，但其实这个未知数是跟Rp有连系的，因为（1-x%）Rp=Dp。而且题目只是在求discounted price，而不是percentage,所以只要知道cost即可。
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2022-09-16 13:44:37
贾思敏
这道题二刷，用时3分7秒，也不应该啊。反思回顾一下：要把隐含等式关系的句子化成数学语言，数学等式，然后化简看出关系！ 由题干可设 the regular price of the shirt是p，shirt的成本是c，折扣价（是打折后的价格，不是打折的折扣！）是d 所以由题干这句话：The store makes the same profit from the sale of 2 shirts that it makes from the sale of 1 shirt at the regular price. 可以得出： p+d-2c=p-c 化简可得：d=c（也就是知道cost成本，就知道discounted price折扣价了，因为成本等于折扣价） 问：d等于多少？ 条件一：只知道p=16，未知c的具体数值，不充分。 条件二：知道c=12，那d=c=12，也就是说discounted price等于12，充分。
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2021-10-05 16:12:56
Kimosan
（1）假设衣服价格为x，折扣为d，衣服的成本为c，则可以列出式子 x+x*d – 2c = x -c, x*d = c. 当x=16时，16d=c, 无法得出d, 所以（1）不充分。(2) 中，c=12, x*d=12 而12正是 discounted price，(2) 充分，答案为B
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2021-03-09 15:15:19
贾思敏回复Kimosan
你这个解析比提交的那个解析好多了
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2021-10-04 23:14:47
小小苹果
原来是求discounted price，我脑补的是discount。。。哎。。。我走过最长的路就是GMAT的套路。。。。
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2020-12-30 06:13:27
小薯w回复小小苹果
我本来是记着的，结果算着算着又忘了..无语
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2021-06-18 11:01:33
Litchichi
如果买二件的价格减去成本等于只买一件的价格减去成本，则买两件时，第二件的价格等于第二件的成本，因此，第二件的价格等于 $12，而题目所求就是第二件的价格，即, discounted price，因为第一件是用 regular price 买的。
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2020-11-21 22:56:30
今天GMAT过730了吗？
证明第二件衬衫用成本价卖出的
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2020-10-25 16:40:50
莫惜昔
为什么还有the same……that的表达呀，为什么不是the same as
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2020-09-24 10:23:49
187569hqa
太坑了 我哭了 这个世界太疯狂了
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2020-09-20 00:04:19
Irennna
总觉得是病句…sc做多了的后果…
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2020-08-06 17:36:37
207179m
profit：p＋d-2c=p-c 推出d=c(其中设p是原价，d是折扣价，c是成本)
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2020-07-16 15:05:42
夏夏夏筱染
说明有一件是成本价购买，没有获得利润
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2020-05-09 09:10:40
303686ulth
（2）两件成本为12，每件成本6。 假设利润为x，一件：p-6=x，两件：(1+?%)p-12=x 联立：p-6=(1+?%)p-12 所以?%p=6，即以成本价售出 未知p的话怎么能知道?%等于多少呢？
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2020-05-08 10:55:52
Run123回复303686ulth
题目问discounted price，并不需要知道利润率=？%。 第二件不赚钱，cost=discount price=12.
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2020-05-08 12:10:11
303686ulth回复303686ulth
啊啊啊明白了！ the discounted price of the second shirt“第二件衬衣的折后价格” 已知第二件衬衣以成本价出售，即折后价格=成本价 （2）
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2020-05-13 11:32:29
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