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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 ## Exam Pack 2 - ranges ##### This topic has 1 expert reply and 2 member replies ## Exam Pack 2 - ranges Hello BTG How do we approach this problem? Thanks in advance Attachments This post contains an attachment. You must be logged in to download/view this file. Please login or register as a user. ### GMAT/MBA Expert GMAT Instructor Joined 25 May 2010 Posted: 15023 messages Followed by: 1859 members Upvotes: 13060 GMAT Score: 790 Quote: The range for a list of measurements equals the greatest measurement minus the least measurement. The two lists of measurements, X and Y, combined consist of 30 measurements with a range of 25. What is the range for the measurements in list X? 1) The range for the 12 measurements in list Y is 20. 2) List X consists of 18 measurements. Both statements are satisfied by the following cases: Case 1: least in Y = 1, greatest in Y = 21, range for Y = greatest - least = 21-1 = 20. least in X = 21, greatest in X = 26, range for X = greatest - least = 26-21 = 5. Since the least value in X and Y is 1, and the greatest value in X and Y is 26, the range for X+Y = 26-1 = 25. In this case, the range for X = 5. Case 2: least in Y = 1, greatest in Y = 21, range for Y = greatest - least = 21-1 = 20. least in X = 1, greatest in X = 26, range for X = greatest - least = 26-1 = 25. Since the least value in X and Y is 1, and the greatest value in X and Y is 26, the range for X+Y = 26-1 = 25. In this case, the range for X = 25. Since X's range can be different values, the two statements combined are INSUFFICIENT. 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. Senior | Next Rank: 100 Posts Joined 18 Dec 2018 Posted: 31 messages Lets say, the least number from the 2 lists is x. Then the biggest number from 2 lists will be (x + 25). Statement 1: We cannot find the biggest and the smallest measurement in X from the given information. So, we cannot find the range of X. Hence, Insufficient. Statement 2: No of measurements in list X doesnâ€™t alone provide us with the range of X. Hence, Insufficient. Statement 1 & 2 together: Information given in both the statement doesnâ€™t help us in finding the range of X unless we are given that the smallest and the largest number of both the lists lie in X. Hence, Insufficient. ### Top Member Senior | Next Rank: 100 Posts Joined 12 Jan 2019 Posted: 38 messages Letâ€™s say, the least number from the 2 lists is x. Then the biggest number from 2 lists will be (x + 25). Statement 1: We cannot find the biggest and the smallest measurement in X from the given information. So, we cannot find the range of X. Hence, Insufficient. Statement 2: No of measurements in list X doesnâ€™t alone provide us with the range of X. Hence, Insufficient. Statement 1 & 2 together: Information given in both the statement doesnâ€™t help us in finding the range of X unless we are given that the smallest and the largest number of both the lists lie in X. Hence, Insufficient. • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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