At a party, the guest of honor stood up to make an anouncement. She said:
"The day before yesterday i was only fourteen. Next year, I will be 17."
How is this possible?
The guest of honour's birthday is December 31. She is speaking at a New Year's Party (or a birthday party that has run late) after midnight, thus on January 1, just after her fifteenth birthday. Therefore, she was fourteen "the day before yesterday", is fifteen now, will be sixteen "this year", i.e. December 31 of the year she is speaking, and will be seventeen "next year".
Solution?
