GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
There was a series of two successive discounts of x% on the
[#permalink]
Updated on: 25 Jun 2019, 11:50
Updated on: 25 Jun 2019, 11:50
00:00
Question Stats:
88% (05:13) correct
11% (00:44) wrong based on 18 sessions
Hide Show timer Statistics
There was a series of two successive discounts of x% on the price of a shirt. The final price of the shirt was tagged at 36% of the original price. What is the value of x?
a) 30%
b) 33%
c) 35%
d) 40%
e) 45%
Question Source is showing answer d) 40%.
It's a question from Jamboree.
a) 30%
b) 33%
c) 35%
d) 40%
e) 45%
Question Source is showing answer d) 40%.
It's a question from Jamboree.
Re: There was a series of two successive discounts of x% on the
[#permalink]
25 Jun 2019, 11:30
25 Jun 2019, 11:30
1
Expert Reply
Not a good question.
At least the question should mention the fact that the two % changes in a row are equal.
Since we are talking of two successive discounts of x%, \(\frac{x}{100} * \frac{x}{100} * 1 = 0.36\)
Since we need the value of x, \(\frac{x^2}{10000} = 0.36\) -> \(x^2 = 3600\) -> \(x = \sqrt{3600} = 60\)
However, 60 is not among the answer choices. Are you sure they are correct ??
Moreover, follow the rules to post on the board. The question must be posted under the problem solving sub-forum NOT in the GRE Expert section.
Regards
https://gre.myprepclub.com/forum/rules-for ... -1083.html
At least the question should mention the fact that the two % changes in a row are equal.
Since we are talking of two successive discounts of x%, \(\frac{x}{100} * \frac{x}{100} * 1 = 0.36\)
Since we need the value of x, \(\frac{x^2}{10000} = 0.36\) -> \(x^2 = 3600\) -> \(x = \sqrt{3600} = 60\)
However, 60 is not among the answer choices. Are you sure they are correct ??
Moreover, follow the rules to post on the board. The question must be posted under the problem solving sub-forum NOT in the GRE Expert section.
Regards
https://gre.myprepclub.com/forum/rules-for ... -1083.html
Re: There was a series of two successive discounts of x% on the
[#permalink]
25 Jun 2019, 11:45
25 Jun 2019, 11:45
This question has me worried. Answers don’t match my analysis. Is this right?
Posted from my mobile device
Posted from my mobile device
