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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 ## A, B, C are three consecutive positive integers (A>B>C tagged by: M7MBA ##### This topic has 2 expert replies and 0 member replies ## A, B, C are three consecutive positive integers (A>B>C ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult A, B, C are three consecutive positive integers (A>B>C). What is the value of the expression 2A +B +3C? A. 6A+7. B. 5A+1. C. 5A-1. D. 6A-5. E. 6A-7. The OA is the option E. Why is E the correct answer? I got the option A. Could anyone help me here? Please. Thanks in advance. ### GMAT/MBA Expert GMAT Instructor Joined 25 May 2010 Posted: 15204 messages Followed by: 1861 members Upvotes: 13060 GMAT Score: 790 M7MBA wrote: A, B, C are three consecutive positive integers (A>B>C). What is the value of the expression 2A +B +3C? A. 6A+7. B. 5A+1. C. 5A-1. D. 6A-5. E. 6A-7. Let A=3, B=2 and C=1. 2A + B + 3C = (2*3) + 2 + (3*1) = 11. Now plug A=3 into the answers to see which yields the value in blue. Only E works: 6A-7 = (6*3) - 7 = 18 -7 = 11. The correct answer is E. _________________ 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. ### GMAT/MBA Expert Elite Legendary Member Joined 23 Jun 2013 Posted: 10112 messages Followed by: 494 members Upvotes: 2867 GMAT Score: 800 Hi All, We're told that A, B, C are three consecutive positive integers and A > B > C. We're asked for the value of the expression (2A +B +3C). This question can be solved rather easily by TESTing VALUES (as Mitch has shown). You could also approach it Algebraically. Since the three variables are CONSECUTIVE INTEGERS and A > B > C, we can write all three variables in terms of A... A = A B = A-1 C = A-2 Thus, the value of 2A + B + 3C can be written as... 2A + (A-1) + 3(A-2) = 2A + A - 1 + 3A - 6 = 6A - 7 Final Answer: E GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com • 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 • FREE GMAT Exam Know how you'd score today for$0

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