Explanation:

- Let's denote the son's current age as \( x \) and the father's current age as \( 2x \) since the father is now twice as old as his son.

- Twenty years ago, the son's age was \( x - 20 \) and the father's age was \( 2x - 20 \).

- At that time, the father was twelve times as old as the son, so we have the equation: \( 2x - 20 = 12(x - 20) \).

- Solving the equation:

\( 2x - 20 = 12x - 240 \)

results in

\( 220 = 10x \),

so \( x = 22 \).

- Therefore, the father is \( 2x = 44 \).

- Let's go through the options:

- Option 1: 22 and 44 years.

- Option 2: 27 and 54 years.

- Option 3: 33 and 66 years.

- Option 4: 15 and 30 years.

- Based on calculations, the present ages are indeed 22 and 44 years.