Professor Layton Wiki
Professor Layton Wiki
039 - One-Line Puzzle 2040 - How Old Is Dad?041 - Spare Change

How Old Is Dad? (Father's Age in the UK version) is a puzzle in Professor Layton and the Curious Village.


A father and 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?


Click a Tab to reveal the Hint.

It sounds convoluted, but look again at what's been presented.
"I'm as old as your age, plus half of my age."
This means that if you take away half of the father's age, you'll have the age of the son.
As you already know, the son is 22.

What the father is essentially saying here is that if you add half of his age to the son's age, you'll get the father's age.
If that's the case, the son's age must be half of the father's age.

As stated in the second hint, half of the father's age is equal to the son's age. To put it another way, the father's age is two times that of his son.



Too bad.

"I'm as old as your age, plus half of my age."

So how many years is half the father's age?


That's right!

Half of the father's age plus the son's age should give you the answer, which means that half the father's age must be equal to the son's age.

The son is 22, so the father must be 44.


A big thanks to