A census-taker calls at a house. He asks the woman living there the ages of her three daughters. The woman says, "if you multiply their ages the totaly is 72. if you add together their ages the total is the same as the number on my front door, which you can see." The census-taker says, that is not enough information for me to calculate their ages. The woman says, well my eldest daughter has a cat with a wooden leg. the census-taken replies, "Ah. Now i know their ages." what are the ages of the three girls?