In objective test a correct answer score 4 marks and on a wrong answer 2 marks are negative . a student score 480 marks from 150 question. how many answer were correct?

  1. 120

  2. 130

  3. 90

  4. 110


Correct Option: B

AI Explanation

To solve this question, we can set up a system of equations. Let's assume that the number of correct answers is x.

According to the given conditions:

  • A correct answer scores 4 marks
  • A wrong answer scores -2 marks

We can set up the equation to find the total score: 4x - 2(150 - x) = 480

Simplifying the equation: 4x - 300 + 2x = 480 6x - 300 = 480 6x = 780 x = 130

Therefore, the number of correct answers is 130.

So, the correct answer is option B) 130.

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