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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 ## Help with DS problem ##### This topic has 2 member replies ## Help with DS problem Martha bought an armchair and a coffee table at an auction and sold both items at her store. Her gross profit from the purchase and sale of the armchair was what percent greater than her gross profit from the purchase and sale of the coffee table? 1. Marth paid 10 percent for the armchair than for the coffee table 2. Marth sold the armchair for 20 percent more than she sold the coffee table Is the answer E because we don't know that price of either the coffee table or armchair? Senior | Next Rank: 100 Posts Joined 09 Jun 2008 Posted: 35 messages Upvotes: 2 Sheet of paper. We're looking for: ARMprofit ________ (divided by) COFFEEprofit where ARMprofit = ARMretail - ARMwhole and COFFEEprofit = COFFEEretail - COFFEEwhole (1) and (2) give us certain variables but don't deliver by themselves, so let's try putting them together. (1) tells us that ARMwhole = 1.1 COFFEEwhole. (2) tells us ARMretail = 1.2 COFFEEretail. We plug those into the main division formula (do some switching)... and it doesn't go anywhere. And you know, I think we actually could have solved this if they told us that the armchair cost 20% more, instead of 10% more, because we could have pulled out a 1.2 in the main division formula. To answer your question, exact values would be enough to solve, but so would a simplified formula. (E) See: if they had told us ARMwhole = 1.2 COFFEEwhole, the formula would reduce to: ARMretail - ARMwhole __________________ COFFEEretail - COFFEEwhole equals: 1.2 COFFEEretail - 1.2 COFFEEwhole ______________________________ COFFEEretail - COFFEEwhole ... and the we could have just pulled out the 1.2 in the numerator and that would be our answer, regardless of specific values for each of those variables. Yeah I did some extra work here... Master | Next Rank: 500 Posts Joined 21 Apr 2008 Posted: 215 messages Test Date: 7/1/08 Target GMAT Score: 650 Isnt it coffee profit/arm profit since cofee profit is greater? • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep 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 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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