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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 ## Mark has fewer than 9 coins. Each coin is either a quarter tagged by: BTGmoderatorLU ##### This topic has 1 expert reply and 0 member replies ### Top Member ## Mark has fewer than 9 coins. Each coin is either a quarter ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult Source: Magoosh Mark has fewer than 9 coins. Each coin is either a quarter (worth$0.25) or a dime ($0.10). How many dimes does Mark have? 1. The total value of Mark's coins is$1.70
2. Mark has three times as many quarters as he has dimes.

The OA is A.

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BTGmoderatorLU wrote:
Source: Magoosh

Mark has fewer than 9 coins. Each coin is either a quarter (worth $0.25) or a dime ($0.10). How many dimes does Mark have?

1. The total value of Mark's coins is $1.70 2. Mark has three times as many quarters as he has dimes. Statement 1: 25Q + 10D = 170 5Q + 2D = 34 To minimize the number of coins, we must maximize the value of Q. If Q=6, then D=2, with the result that 5Q + 2D = (5*6) + (2*2) = 34. In this case, the total number of coins = 6+2 = 8. If the value of Q decreases, then the total number of coins will have to increase and thus not be less than 9. Implication: For the total number of coins to be less than 9, Q=6 and D=2. SUFFICIENT. Statement 2: Case 1: D=1 and Q=3, for a total of 4 coins Case 2: D=2 and Q=6, for a total of 8 coins Since D can be different values, INSUFFICIENT. The correct answer is A. _________________ 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. • 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 • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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