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In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. If he attempts all 75 questions and secures 125 marks, the number of questions he attemtpts correctly is
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- 35
- 40
- 42
- 46
Correct Option: B
Let the number of correct answers be x.
∴ x × 4 – (75 – x ) × 1 = 125
⇒ 4x –75 + x = 125
⇒ 5x = 125 + 75 = 200
| ∴ x = | = 40 | |
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