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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 R, S, and T are points on a line tagged by: AbeNeedsAnswers ##### This topic has 2 expert replies and 0 member replies ## If R, S, and T are points on a line ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult If R, S, and T are points on a line, and if R is 5 meters from T and 2 meters from S, how far is S from T ? (1) R is between S and T. (2) S is to the left of R, and T is to the right of R. D Source: Official Guide 2020 ### GMAT/MBA Expert GMAT Instructor Joined 08 Dec 2008 Posted: 12975 messages Followed by: 1249 members Upvotes: 5254 GMAT Score: 770 AbeNeedsAnswers wrote: If R, S, and T are points on a line, and if R is 5 meters from T and 2 meters from S, how far is S from T ? (1) R is between S and T. (2) S is to the left of R, and T is to the right of R. D Source: Official Guide 2020 Given: R, S, and T are points on a line, and if R is 5 meters from T and 2 meters from S There are 4 possible scenarios that meet the above conditions: Target question: How far is S from T? Statement 1: R is between S and T. When we check the 4 possible scenarios, we see that scenarios #2 and #3 meet the conditions of statement 1 For both scenarios, the answer to the target question is the distance from S to T is 7 Since we can answer the target question with certainty, statement 1 is SUFFICIENT Statement 2: S is to the left of R, and T is to the right of R. When we check the 4 possible scenarios, we see that only scenario #2 meets the conditions of statement 2 For scenario #2, the answer to the target question is the distance from S to T is 7 Since we can answer the target question with certainty, statement 2 is SUFFICIENT Answer: D Cheers, Brent _________________ Brent Hanneson â€“ Creator of GMATPrepNow.com Use my video course along with Sign up for free Question of the Day emails And check out all of these 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: 10197 messages Followed by: 496 members Upvotes: 2867 GMAT Score: 800 Hi All, We're told that R, S, and T are points on a line, R is 5 meters from T and R is 2 meters from S. We're asked for the distance between S and T. This question can be solved with a bit of logic and Arithmetic (and you might find it helpful to draw some actual number lines). (1) R is between S and T. With the information in Fact1, we know that R is somewhere between S and T. Regardless of where you place those 3 values on a number line, since R is 5 meters from S and 2 meters from T, then the line ST will be exactly 5+2 = 7 meters in length. Fact 1 is SUFFICIENT (2) S is to the left of R, and T is to the right of R. The information in Fact 2 takes the information that's in Fact1 and 'restricts' it a bit more (placing S to the 'left' and T to the 'right' - relative to R's position - on the number line. The deduction that we made in Fact1 also applies to Fact2. ST will be exactly 5+2 = 7 meters in length. Fact 2 is SUFFICIENT Final Answer: D GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com • Award-winning private GMAT tutoring Register now and save up to$200

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