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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 ## How many questions did Joey attempt in a math test... tagged by: swerve ##### This topic has 1 expert reply and 0 member replies ### Top Member ## How many questions did Joey attempt in a math test... How many questions did Joey attempt in a math test having 25 questions? A) Joey scored 16 marks. B) For every correct answer, Joey got 1 mark while for every incorrect answer, Joey lost 0.25 marks. The OA is E. Please, can any expert explain this DS question for me? I have many difficulties to understand why that is the correct answer. Thanks. ### GMAT/MBA Expert Legendary Member Joined 14 Jan 2015 Posted: 2667 messages Followed by: 122 members Upvotes: 1153 GMAT Score: 770 swerve wrote: How many questions did Joey attempt in a math test having 25 questions? A) Joey scored 16 marks. B) For every correct answer, Joey got 1 mark while for every incorrect answer, Joey lost 0.25 marks. The OA is E. Please, can any expert explain this DS question for me? I have many difficulties to understand why that is the correct answer. Thanks. This question is problematic - in the stem, it would have to be made clear that test-takers would receive an unspecified number of points for correct answers and incur an unspecified penalty for incorrect answers. (And presumably, questions not attempted would have no impact on the overall score or some other unspecified penalty.) If we assume that questions not attempted have no impact on the overall score, we can see that even together, there would not be enough information to determine how many questions Joey attempted. It's possible that Joey had 16 correct answers and left the last nine blank, or that he had 17 correct answers, answered 4 incorrectly, and left 4 blank, etc, so the answer would have to be E That said, this source strikes me as dubious. _________________ Veritas Prep | GMAT Instructor Veritas Prep Reviews Save$100 off any live Veritas Prep GMAT Course

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