Q. If 6 * 9 – 4 = 58 and 3 * 9 – 7 = 34, then in the expression A * 4 – 9 = 91, what is the value of 'A'?

• A. 6.5
• B. 12.5
• C. 20.5
• D. 23.5

Correct Answer: C