Answer: 14 questions attempted incorrectly
Explanation:
When you say Sumit scored 36 marks, it means he got 36% right out of the 100%.
So. let T = total number of questions
0.36*T = # of correct questions
0.36* T = 8
T = 8 / 0.36 = 800/36 = 200/9 = 22.2 about
22 - 8 = 14 questions