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Register now and save up to $200 Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code ## The smaller rectangle in the figure This topic has 1 member reply boomgoesthegmat Senior | Next Rank: 100 Posts Joined 25 Apr 2016 Posted: 93 messages Thanked: 1 times #### The smaller rectangle in the figure Tue May 03, 2016 2:50 pm Elapsed Time: 00:00 • Lap #[LAPCOUNT] ([LAPTIME]) The smaller rectangle in the figure above represents the original size of a parking lot before its length and width were each extended by w feet to make the larger rectangular lot shown. If the area of the enlarged lot is twice the area of the original lot, what is the value of w? A) 25 B) 50 C) 75 D) 100 E) 200 OA: E Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums! OptimusPrep Master | Next Rank: 500 Posts Joined 13 Mar 2015 Posted: 410 messages Followed by: 7 members Thanked: 120 times GMAT Score: 770 Tue May 03, 2016 7:15 pm boomgoesthegmat wrote: The smaller rectangle in the figure above represents the original size of a parking lot before its length and width were each extended by w feet to make the larger rectangular lot shown. If the area of the enlarged lot is twice the area of the original lot, what is the value of w? A) 25 B) 50 C) 75 D) 100 E) 200 OA: E Original Area = 100*150 sq ft = 15,000 Area of the enlarged parking lot = 30,000 sq ft. (100 + w)*(150 + w) = 30,000 At this point, we can either solve the quadratic equation for w, or test the options. Testing the options. Option A: w cannot be 25, because when 2 numbers ending with 5 are multiplied, the resultant also has a units digit of 5. But we need the units digit 0 Option B: w = 50 (100 + 50)*(150 + 50) = 150*200 = 30,000 Correct Option: B @boomgoesthegmat, I think you need to recheck the OA for this one. _________________ Ankur 99th Percentile GMAT Tutor | Optimus Prep™ Optimus Prep™ GMAT Courses: www.Optimus-Prep.com/GMAT Free Online Trial Hour: http://www.optimus-prep.com/request-free-online-trial-hour/ Free GMAT Study Plan: http://www.optimus-prep.com/ebook/ Optimus Prep™ Rates: GMAT Private Tutoring Online:$80-100/hr.*
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