If you think long enough, you will solve this... so don't look at the solution too early#
Peter asks John: "How old are your three daughters now?"
John replies: "Well, I will let you calculate their age, all of course in whole numbers: The sum of their ages is equal to the number on your apartment. The product of their ages is 36."
Peter thinks quite a while and then says: "Sorry, this is not enough information for me."
John answers: "Ok, I help you a bit. The oldest of the three is blond."
Peter smiles: "Now all is clear."
Is it also clear to you, dear reader? How old are the three girls?
NOTE: This is no joke or dirty trick, you have all the information necessary to determine the three ages.


