A. 33 years

B. 39 years

C. 45 years

D. 40 years

### Solution(By Apex Team)

Let the present age of Son = x years And the father’s age = 3x + 3 $\begin{array}{l}\text{According to the question,}\\ \text{2 (x + 3) + 10 = 3x + 3 + 3}\\ \text{2x + 6 + 10 = 3x + 6}\\ \text{2x + 16 = 3x + 6}\\ \text{x = 10 years}\\ \text{Father’s age}\\ \text{= 3 × 10 + 3 = 33 years}\end{array}$