In an examination, a student scores 4 marks for every correct answer and loses I mark for every wrong answer. If he attempts in all 60 questions and secures 130 marks, the number of questions he attempts correctly, is:

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Let the number of correct answers be X. Number of incorrect answers = (60 – X). Therefore, 4x – (60 – x) = 130 => 5x = 190 => x = 38

In an examination, a student scores 4 marks for every correct answer and loses I mark for every wrong answer. If he attempts in all 60 questions and secures 130 marks, the number of questions he attempts correctly, is:

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