Correct Answer - Option 4 : 20
Given:
The candidate attempted 12 questions and all 12 questions are correct
Formula used:
Percentage = (Part value/Full value) × 100
Calculation:
Let each question carry x marks
Marks scored by the candidate is
⇒ 60% = 12 × x
⇒ 100% = (12x/60) × 100
⇒ 100% = 20x
So there are 20 questions.
∴ Total number of question is 20 in the examination.