In an examination, two types of questions are asked: one mark questions and two marks questions. For each wrong answer, of one mark question, the deduction is ¼ of a mark and for each wrong answer, of two marks question, the deduction is 1/3 of a ma ?->(Show Answer!)

1. In an examination, two types of questions are asked: one mark questions and two marks questions. For each wrong answer, of one mark question, the deduction is ¼ of a mark and for each wrong answer, of two marks question, the deduction is 1/3 of a mark. Moreover, ½ of a mark is deducted for any unanswered question. The question paper has 10 one mark questions and 10 two marks questions. In the examination, students got all possible marks between 25 and 30 and every student had different marks. What would be the rank of a student, who scores a total of 27.5 marks?

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By: anil on 05 May 2019 02.37 am

It is evident that, 1 wrong 2 marks question would result in 2.33 deduction from the total (As negative in 2 marks question is 1/3 of a mark) 1 wrong of 1 mark question lead to deduction of 1.25 marks 1 unattempted of 1 mark question lead to deduction of 1.5 marks
1 unattempted of 2 marks question lead to deduction of 3 marks
$$ herefore$$ Rank of student who scores 27.5 = 5

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