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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 ## Shifting books from shelves problem - Power Prep ##### This topic has 2 member replies ## Shifting books from shelves problem - Power Prep Hi, Here is a question. I think the answer is B. But OA is D. Why , because we have the same difference of 6 shelves if we have 8 old shlelves or 9 old shelves. a) if we had 8 shelves of 50 capacity, meaning 400 books, we need at least 14 shelves to accomodate all of these books. So we need 6 more small capacity shelves than the big capacity 1. b) if we have 9 old shelves, total books at 450. We need 15 new ones. The important point to note is that in the case a there will be some extra space of 20 books left on the last shelf. But there is no such restriction that there should be no free space. So I think A is not sufficient. Here is the question and the detail explanation of the OA. Do you agreee ? Attachments This post contains an attachment. You must be logged in to download/view this file. Please login or register as a user. Senior | Next Rank: 100 Posts Joined 11 Jul 2008 Posted: 58 messages Upvotes: 4 Test Date: 8/16/2008 Target GMAT Score: 730+ It's subtle but I think the problem states "with 30 picture books on each shelf" and implies that each shelf is full. I can see where the wording could be confusing. Your point would be much stronger if the question stated something along the lines of "shelf with capacity of 30 books"- perhaps in that case you wouldn't need to assume the shelf is full. Master | Next Rank: 500 Posts Joined 15 Mar 2008 Posted: 102 messages Upvotes: 4 Thanks. I never looked from that point of view, going so deeply. I hope the real GMAT will not have such small points, there is hardly any time to go into such minute details. • Magoosh Study with Magoosh GMAT prep 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 • Free Veritas GMAT Class Experience Lesson 1 Live Free 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 • Award-winning private GMAT tutoring Register now and save up to$200

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