Discussion

Explanation:

Since he got 64 marks in section A, he must have attempted all 24 questions and got 22 correct and 2 wrong.
∴ His marks = 22 × 3 – 2 × 1 = 64.

Ratio of number of questions attempted in three sections = 8 : 6 : 7
Number of questions attempted in section 1 = 24
∴ Number of questions attempted in section 2 = 18
∴ Number of questions attempted in section 3 = 21

Ratio of number of questions correct in three sections = 11 : 9 : 8.
Number of questions correct in section 1 = 22
∴ Number of questions correct in section 2 = 18
∴ Number of questions correct in section 3 = 16

∴ Marks in section B = 18 × 3 = 54

Hence, 54.

» Your doubt will be displayed only after approval.