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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## Percentage problem ##### This topic has 1 expert reply and 3 member replies ## Percentage problem Can anyone please give me easy explanation for this? 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) $6.80 OA: D Junior | Next Rank: 30 Posts Joined 09 Feb 2013 Posted: 26 messages Upvotes: 4 P*(85/100)=68$ [85/100 means 15% discount]
P=80$original price Final price = P*(85/100)*(125/100)=68*(125/100)=85$

Difference = 85-80 = 5$Newbie | Next Rank: 10 Posts Joined 09 Oct 2012 Posted: 4 messages Thank you so much ! Senior | Next Rank: 100 Posts Joined 06 May 2012 Posted: 73 messages Upvotes: 6 Target GMAT Score: 650+ Original price = x 15% less = 85x/100 Further in the question it is stated that 85x/100 = 68 => x = 80 (Original Price) Price again raised by 25% on 68. Therefore new price 85 New Price (85) - Original Price (80) = 5 Answer D. ### GMAT/MBA Expert GMAT Instructor Joined 25 May 2010 Posted: 15385 messages Followed by: 1872 members Upvotes: 13060 GMAT Score: 790 pradeepfriend2000 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 15% discount = 15/100 = 3/20. The denominator here implies that the original price is almost certainly a multiple of 20 just a bit greater than the discounted price. Since the discounted price = 68, the original price is probably 80: 80 less 3/20 = 80 - (3/20)80 = 80-12 = 68. Success! Discounted price increased by 25% = 68 + (1/4)68 = 68 + 17 = 85. Difference between the final price and the original price = 85-80 = 5. The correct answer is D. Algebraically: Since the 15% discount is equal to 3/20 of the original price, the discounted price is equal to 17/20 of the original price: 68 = (17/20)x x = 68(20/17) = 80. Discounted price increased by 25% = 68 + (1/4)68 = 68 + 17 = 85. Difference between the final price and the original price = 85-80 = 5. _________________ Mitch Hunt Private Tutor for the GMAT and GRE GMATGuruNY@gmail.com If you find one of my posts helpful, please take a moment to click on the "UPVOTE" icon. Available for tutoring in NYC and long-distance. For more information, please email me at GMATGuruNY@gmail.com. Student Review #1 Student Review #2 Student Review #3 Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now. • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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