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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 ## By what percent is 25 greater than 15? ##### This topic has 3 expert replies and 1 member reply ### Top Member ## By what percent is 25 greater than 15? ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult By what percent is 25 greater than 15? (A) 10% (B) 25% (C) 33 1/3% (D) 60% (E) 66 2/3% OA E Source: Manhattan Prep ### GMAT/MBA Expert GMAT Instructor Joined 22 Aug 2016 Posted: 1702 messages Followed by: 28 members Upvotes: 470 BTGmoderatorDC wrote: By what percent is 25 greater than 15? (A) 10% (B) 25% (C) 33 1/3% (D) 60% (E) 66 2/3% OA E Source: Manhattan Prep 25 is greater than 15 by 10 (= 25 - 15). Thus, 25 is greater than 15 by (10/15)*100% = 66 2/3%. The correct answer: E Hope this helps! -Jay _________________ Manhattan Review Locations: Manhattan Review Chennai | GMAT Prep Himayatnagar | GRE Prep Hyderabad | Bangalore GRE Coaching | and many more... Schedule your free consultation with an experienced GMAT Prep Advisor! Click here. Legendary Member Joined 20 Jul 2009 Posted: 1022 messages Followed by: 2 members Upvotes: 41 Test Date: ND Target GMAT Score: 780 GMAT Score: NA BTGmoderatorDC wrote: By what percent is 25 greater than 15? (A) 10% (B) 25% (C) 33 1/3% (D) 60% (E) 66 2/3% OA E Source: Manhattan Prep 25/15 = 5/3 = 1.6666 So, 25 is greater than 15 by .666666 x100 % = 66.66% Answer E _________________ My Websites: www.mba.webmaggu.com - India's social Network for MBA Aspirants www.deal.webmaggu.com -India's online discount, coupon, free stuff informer. www.dictionary.webmaggu.com - A compact free online dictionary with images. Nothing is Impossible, even Impossible says I'm possible. ### GMAT/MBA Expert GMAT Instructor Joined 09 Oct 2010 Posted: 1125 messages Followed by: 29 members Upvotes: 59 BTGmoderatorDC wrote: By what percent is 25 greater than 15? (A) 10% (B) 25% (C) 33 1/3% (D) 60% (E) 66 2/3% Source: Manhattan Prep $$15\,\,\mathop \to \limits^{?\,\, = \,\,\Delta \% } \,\,25$$ $$? = {{25 - 15} \over {15}} = {2 \over 3}\,\,\,\,\, \Rightarrow \,\,\,\,\left( {\rm{E}} \right)$$ This solution follows the notations and rationale taught in the GMATH method. Regards, Fabio. _________________ Fabio Skilnik :: GMATH method creator ( Math for the GMAT) English-speakers :: https://www.gmath.net Portuguese-speakers :: https://www.gmath.com.br ### GMAT/MBA Expert GMAT Instructor Joined 08 Dec 2008 Posted: 12550 messages Followed by: 1245 members Upvotes: 5254 GMAT Score: 770 BTGmoderatorDC wrote: By what percent is 25 greater than 15? (A) 10% (B) 25% (C) 33 1/3% (D) 60% (E) 66 2/3% An alternative approach is to test the answer choices First, however, we can eliminate some answer choices by first testing an easy value: 50% Is 25 50% greater than 15? Well, 50% of 15 = 7.5 So, 50% greater than 15 = 15 + 7.5 = 22.5 22.5 is too small (we need to get 25), so we need a percentage that's greater than 50% So, we can ELIMINATE A, B and C Now we'll test answer choice D: 60% Is 25 60% greater than 15? 60% of 15 = 9 So, 60% greater than 15 = 15 + 9 = 24 (no good - we need 25) We can ELIMINATE D By the process of elimination, the correct answer is E Cheers, Brent _________________ Brent Hanneson â€“ Creator of GMATPrepNow.com Use our video course along with Sign up for our free Question of the Day emails And check out all of our free resources GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMATâ€™s FREE 60-Day Study Guide and reach your target score in 2 months! • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • 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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