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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 At a certain picnic, each of the guests was served either a This topic has 1 expert reply and 0 member replies Top Member At a certain picnic, each of the guests was served either a Timer 00:00 Your Answer A B C D E Global Stats Difficult At a certain picnic, each of the guests was served either a single scoop or a double scoop ice-cream. How many of the guests were served a double scoop of ice-cream? (1) At the picnic, 60 percent of the guests were served a double scoop of ice-cream. (2) A total of 120 scoops of ice-cream were served to all the guests at the picnic. OA C Source: Official Guide GMAT/MBA Expert GMAT Instructor Joined 25 May 2010 Posted: 15387 messages Followed by: 1872 members Upvotes: 13060 GMAT Score: 790 Top Reply BTGmoderatorDC wrote: At a certain picnic, each of the guests was served either a single scoop or a double scoop ice-cream. How many of the guests were served a double scoop of ice-cream? (1) At the picnic, 60 percent of the guests were served a double scoop of ice-cream. (2) A total of 120 scoops of ice-cream were served to all the guests at the picnic. Let D = the double-scoop guests and S = the single-scoop guests. What is value of D? Statement 1: Since 60% received a double-scoop, the remaining 40% received a single scoop. Thus: D/S = 60%/40% = 3/2 No way to solve for D. INSUFFICIENT. Statement 2: Since the D double-scoop guests each received 2 scoops, while the S single-scoop guests each received 1 scoop, we get: 2D + S = 120 No way to solve for D. INSUFFICIENT. Statements combined: Since we have two variables (D and S) and two distinct linear equations (D/S=3/2 and 2D+S=120), we can solve for the two variables. Thus, the value of D can be determined. SUFFICIENT. The correct answer is C. _________________ 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. • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

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