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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 ## If Sam were twice as old as he is, he would be 40 years tagged by: swerve ##### This topic has 3 expert replies and 0 member replies ### Top Member ## If Sam were twice as old as he is, he would be 40 years ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult If Sam were twice as old as he is, he would be 40 years older than Jim. If Jim is 10 years younger than Sam, how old is Sam? A. 20 B. 30 C. 40 D. 50 E. 60 The OA is B Source: Official Guide ### GMAT/MBA Expert GMAT Instructor Joined 08 Dec 2008 Posted: 12822 messages Followed by: 1247 members Upvotes: 5254 GMAT Score: 770 swerve wrote: If Sam were twice as old as he is, he would be 40 years older than Jim. If Jim is 10 years younger than Sam, how old is Sam? A. 20 B. 30 C. 40 D. 50 E. 60 Jim is 10 years younger than Sam Let x = Sam's PRESENT age So, x - 10 = Jim's PRESENT age If Sam were twice as old as he is, he would be 40 years older than Jim. TWICE Sam's age = 2x So, we can write: 2x = (x - 10) + 40 Simplify: 2x = x + 30 Solve: x = 30 Answer: B 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! ### GMAT/MBA Expert Elite Legendary Member Joined 23 Jun 2013 Posted: 10124 messages Followed by: 494 members Upvotes: 2867 GMAT Score: 800 Hi All, We're told that if Sam were TWICE as old as he is, then he would be 40 years older than Jim and that Jim is currently 10 years YOUNGER than Sam. We're asked for Sam's current age. This question can be solved in a couple of different ways, including by TESTing THE ANSWERS. Since the difference between the two ages is currently 10 years, and the answer choices are in increasing increments of 10 years, it's likely that we're dealing with one of the smaller answers (since by DOUBLING Sam's age will only increase the difference to 40 years). Let's TEST Answer B first: Answer B: 30 years IF... Sam is 30 years old Jim is 30 - 10 = 20 years old Doubling Sam's age.... (2)(30) = 60 years 60 - 20 = 40 years difference. This matches everything that we were told, so this must be the answer. Final Answer: B GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2413 messages Followed by: 18 members Upvotes: 43 swerve wrote: If Sam were twice as old as he is, he would be 40 years older than Jim. If Jim is 10 years younger than Sam, how old is Sam? A. 20 B. 30 C. 40 D. 50 E. 60 The OA is B Source: Official Guide We can let the current ages of Sam and Jim be S and J, respectively, and create the equations: 2S = J + 40 and J = S - 10 Substituting, we have: 2S = S - 10 + 40 S = 30 Answer: B _________________ Scott Woodbury-Stewart Founder and CEO scott@targettestprep.com See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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