In a competitive exam 3 marks are given for every correct answer and 1 mark deducted for every incorrect answer. Raju copied some answers from Rema and answer all the questions .He scored 20 marks though he got 10 correct answers. How many incorrect answers had he attempted? What values are promoted in the question.
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Explanation:
Marks awarded for correct answer = 3
Marks awarded for incorrect answer = -1 No. of correct answer = 10
Marks secured for correct answers = 30
Marks scored =20
Marks lost = 10
Therefore, he answered 10 wrong questions.
The total number of questions in the exam is 20
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