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In an examination, a student scores 4 marks for every correct answer and loses 1 mark for every wrong answer. A student attempted all the 200 questions and scored in all 200 marks. The number of questions, he answered correctly was
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- 82
- 80
- 68
- 60
Correct Option: B
If the number of correct answers be x, then
x × 4 – 1. (200 – x ) = 200
⇒ 4x – 200 + x = 200
⇒ 5x = 400
| ⇒ x = | = 80 | |
| 5 |
