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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 ## DS Test - 16 - Q7 tagged by: Brent@GMATPrepNow ##### This topic has 2 expert replies and 0 member replies ## DS Test - 16 - Q7 7. If a certain grove consists of 36 pecan trees, what was the yield per tree last year? (1) The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year. (2) The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year. OA is E. But I am surprised. It should be C. Any explanation.. ### GMAT/MBA Expert GMAT Instructor Joined 21 Jan 2009 Posted: 3650 messages Followed by: 81 members Upvotes: 267 GMAT Score: 760 f2001290 wrote: 7. If a certain grove consists of 36 pecan trees, what was the yield per tree last year? (1) The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year. (2) The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year. OA is E. But I am surprised. It should be C. Any explanation.. Statements have to be taken together without doubt; hence the answer could be C or E. Real trick is this hidden question, “Do the northern and the eastern halves of the grove have any trees COMMON or NOT?” Hence E. _________________ The mind is everything. What you think you become. –Lord Buddha Sanjeev K Saxena Quantitative Instructor The Princeton Review - Manya Abroad Lucknow-226001 www.manyagroup.com 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 GMAT Instructor Joined 08 Dec 2008 Posted: 12655 messages Followed by: 1245 members Upvotes: 5254 GMAT Score: 770 If a certain grove consists of 36 pecan trees, what was the yield per tree last year? (1) The yield per tree for the 18 trees in the northern half of the grove was 60 kilograms last year. (2) The yield per tree for the 18 trees in the eastern half of the grove was 55 kilograms last year. Sanjeev's explanation is perfect. I thought I'd add some images for any students who may prefer a visual explanation. GOAL: Determine the yield for the ENTIRE grove. Statement 1 tells us about the shaded trees shown here. Since there are trees we know nothing about, statement 1 is not sufficient. Statement 2 tells us about the shaded trees shown here. Since there are trees we know nothing about, statement 2 is not sufficient. The statements COMBINED could look something like this. Since it's still possible that we have no information about some trees, we can't answer the target question with any certainty. Answer: E Cheers, Brent _________________ Brent Hanneson – 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 GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months! • 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 • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE 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 Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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