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If a compact disc that usually sells for $12.95 is on
sale for $9.95, then the percent decrease in price is
closest to
(A) 38%
(B) 31%
(C) 30%
(D) 29%
(E) 23%
Please help with this
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Gammy
If a compact disc that usually sells for $12.95 is on
sale for $9.95, then the percent decrease in price is
closest to
(A) 38%
(B) 31%
(C) 30%
(D) 29%
(E) 23%
Please help with this

Discussed here: https://gmatclub.com/forum/if-a-compact ... 41076.html
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Bunuel
IN approx why we are taking 12.95 as 12 not 13 as it is closest to 13 ? can you also share a guide for approx.
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:") is anyone here to help me with maths?
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Gammy
If a compact disc that usually sells for $12.95 is on
sale for $9.95, then the percent decrease in price is
closest to
(A) 38%
(B) 31%
(C) 30%
(D) 29%
(E) 23%
Please help with this
% decrease = ((new price- old price)/old price) * 100
= ((12.95-3.95)/12.95)* 100
= 23%
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(Actual price - discounted price/ actual price ) *100
12.95-9.95/12.95 =23%
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Really struggling with fractions and exponents arithmetic can someone suggest resources please?

it is true that we should not start DI before being thorough with Quant and Verbal prep . if starting from scratch when should one begin prep for DI??
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Abraralam
it is true that we should not start DI before being thorough with Quant and Verbal prep . if starting from scratch when should one begin prep for DI??
Yes your absolutely correct that you start with DI prep only once are truly immersed with the quant and verbal concepts.

Abraralam
Really struggling with fractions and exponents arithmetic can someone suggest resources please?
I am sharing few free resources might be of any help. Here is the link: ultimate-gmat-quantitative-preparation-guide-244512.html#p1886497

If you need further help feel free to ping me on private chat. All the best!
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Hi Pooja Arora,
For DI can you suggest resources ?
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can someone tell me the right answer, this is from nmat, i think the source has given an incorrect answer
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TanyaBhargava
can someone tell me the right answer, this is from nmat, i think the source has given an incorrect answer
I guess A is the answer for this. Provided (x+y) is even implies (x+y)(x-y) is also even. Hence (x^2-y^20 is also even whereas 2 is insufficient for answering the question

*(x^2-y^2)

Please correct me if I am wrong
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TanyaBhargava
can someone tell me the right answer, this is from nmat, i think the source has given an incorrect answer
The correct answer is C. This question is discussed here: is-x-2-y-2-even-1-x-y-is-odd-2-x-y-is-105171.html

P.S. Pure algebraic questions are no longer a part of the DS syllabus of the GMAT.

DS questions in GMAT Focus encompass various types of word problems, such as:
  • Word Problems
  • Work Problems
  • Distance Problems
  • Mixture Problems
  • Percent and Interest Problems
  • Overlapping Sets Problems
  • Statistics Problems
  • Combination and Probability Problems

While these questions may involve or necessitate knowledge of algebra, arithmetic, inequalities, etc., they will always be presented in the form of word problems. You won’t encounter pure "algebra" questions like, "Is x > y?" or "A positive integer n has two prime factors..."

Check GMAT Syllabus for Focus Edition

You can also visit the Data Sufficiency forum and filter questions by OG 2024-2025, GMAT Prep (Focus), and Data Insights Review 2024-2025 sources to see the types of questions currently tested on the GMAT.

So, you can ignore this and similar questions.

Hope it helps.
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