As a kid, I watched Sesame Street. One segment was on sharing. Bert has a cookie, and Ernie comes and asks him “will you share your cookie with me, Bert?”
Here’s an old fraction puzzle. I have no idea who invented this, or whether it is decades or centuries old, but it’s always been a favorite conundrum of mine.
It starts with a man who wills his possessions to his three sons. The will specifies that the eldest son should get half his fortune, the second son a quarter, and the youngest son a sixth.