Puzzle of the Week #001 - Professor Layton and the Curious Village

A father and a son are chatting when the son poses this question: "Dad, I'm 22 now, but just how old are you?"

The father replies, "You wanna know how old your old man is, eh? Hmm, well, I tell you what. I'm as old as your age, plus half of my age."

How old is the father?

Have a hard time finding the solution for this puzzle? Try using these hints.

Hints :

Hint I
Hint II
Hint III

The answer of this puzzle will be revealed next week.Try to find it before then. Have a nice thinking time!