Question

In an examination, there are 30 questions, 1 mark is given for each correct answer and 0.25 is deducted for every incorrect answer. Ankur attempted all the questions and scored 13.75 How many incorrect answers did he have?

• A. 10
• B. 11
• C. 12
• D. None of these

Answer 1

The correct option is D None of these

Let Ankur solved x right questions
His over all score = $x-\frac{(30-x)}{4}=13.75$
4x - 30 + x = 13.75 $\times$ 4
x = 17
Ankur did 13 wrong questions.