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# Cindy has her eye on a sundress but thinks it is too expensi

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Joined: 05 Jul 2012
Posts: 12
Cindy has her eye on a sundress but thinks it is too expensi  [#permalink]

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Updated on: 21 Jul 2013, 02:06
1
5
00:00

Difficulty:

35% (medium)

Question Stats:

77% (02:22) correct 23% (03:00) wrong based on 264 sessions

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Cindy has her eye on a sundress but thinks it is too expensive. It goes on sale for 15% less than the original price. Before Cindy can buy the dress, however, the store raises the new price by 25%. If the dress cost $68 after it went on sale for 15% off, what is the difference between the original price and the final price? A.$0.00
B. $1.00 C.$3.40
D. $5.00 E.$6.80

Originally posted by espa on 21 Jul 2013, 01:57.
Last edited by Bunuel on 21 Jul 2013, 02:06, edited 1 time in total.
Edited the question and the tags.
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Re: Cindy has her eye on a sundress but thinks it is too expensi  [#permalink]

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21 Jul 2013, 02:02
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Cindy has her eye on a sundress but thinks it is too expensive. It goes on sale for 15% less than the original price. Before Cindy can buy the dress, however, the store raises the new price by 25%. If the dress cost $68 after it went on sale for 15% off, what is the difference between the original price and the final price?$0.00
$1.00$3.40
$5.00$6.80

$$OriginalPrice*\frac{85}{100}=68$$ => $$OP=80$$$Than the discouts/raises are as follow $$80*\frac{85}{100}*\frac{125}{100}=68*\frac{5}{4}=85$$ Difference=$$85-80=5$$$
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Re: Cindy has her eye on a sundress but thinks it is too expensi  [#permalink]

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21 Jul 2013, 02:05
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espa wrote:
Cindy has her eye on a sundress but thinks it is too expensive. It goes on sale for 15% less than the original price. Before Cindy can buy the dress, however, the store raises the new price by 25%. If the dress cost $68 after it went on sale for 15% off, what is the difference between the original price and the final price?$0.00
$1.00$3.40
$5.00$6.80

0.85*{Original Price} = $68 --> {Original Price} =$80.

{Final Price} = $68*1.25 =$85.

The difference = $85 -$85 = $5. Answer: D. Hope it's clear. _________________ Intern Joined: 25 May 2012 Posts: 5 Location: United States Concentration: Finance WE: Corporate Finance (Non-Profit and Government) Re: Cindy has her eye on a sundress but thinks it is too expensi [#permalink] ### Show Tags 22 Jul 2013, 13:01 1 You can use this way if you are uncomfortable multiplying by decimals: Original Amount: Using this percent change formula: NA = OA(1+/-(p/100)) Our NA = 68 and our percent change = 15% less than so, 68 = OA(1-(15/100)) 68 = OA(85/100) OA = 80 Final Amount: Using this percent change formula: NA = OA (1+/-(p/100))(1+/-(p/100))............. Our NA is the unknown final price Plug in your original price for OA NA = 80(1-(15/100))(1+(25/100)) NA = 80(85/100)(125/100) NA = 85 We use (1-(15/100)) because our sale price is 15% less than original We use (1+(25/100)) because our final price is 25% more than our sale price Subtract 85-80=5 D SVP Status: The Best Or Nothing Joined: 27 Dec 2012 Posts: 1751 Location: India Concentration: General Management, Technology WE: Information Technology (Computer Software) Re: Cindy has her eye on a sundress but thinks it is too expensi [#permalink] ### Show Tags 29 Oct 2013, 00:35 Let original price = x Price with 15% disc = 85x/100................. (1) Increase of 25% on (1) = 85x/100 * 5/4.................... (2) From the information given, 85x/100 = 68, so x = 80 Placing value of x in (2) = 85 Difference = 85-80 = 5 _________________ Kindly press "+1 Kudos" to appreciate Senior Manager Joined: 10 Jan 2013 Posts: 294 Location: India Concentration: General Management, Strategy GPA: 3.95 Re: Cindy has her eye on a sundress but thinks it is too expensi [#permalink] ### Show Tags 18 May 2019, 00:38 espa wrote: Cindy has her eye on a sundress but thinks it is too expensive. It goes on sale for 15% less than the original price. Before Cindy can buy the dress, however, the store raises the new price by 25%. If the dress cost$68 after it went on sale for 15% off, what is the difference between the original price and the final price?

A. $0.00 B.$1.00
C. $3.40 D.$5.00
E. $6.80 My Approach: given -- let x be the original price .85x = 68 x =80 new price = 68*1.25 = 85 difference = 85-80 = 5 Senior Manager Joined: 05 Jul 2018 Posts: 406 Location: India Concentration: General Management, Technology GMAT 1: 600 Q47 V26 GRE 1: Q162 V149 GPA: 3.6 WE: Information Technology (Consulting) Re: Cindy has her eye on a sundress but thinks it is too expensi [#permalink] ### Show Tags 16 Jun 2019, 01:58 Let original price be x After a discount of 15% 0.85*x=68 x=(68*100)/85 = (68*20)/17= (4*20)=80 After an increase of 25% on$68 price, the price becomes, 1.25*68= 5/4*68= 5*17 = $85 Difference between original price x=$80 and the final price of $85 is$5

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Re: Cindy has her eye on a sundress but thinks it is too expensi   [#permalink] 16 Jun 2019, 01:58
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