How it works
Mia and Leo's gentle garden has one rule: each year, one new coin for every ten inside.
Mia planted 100 coins at twenty. Leo kept his in a pouch, where coins do not grow, and planted 200 at thirty.
Leo planted double Mia's start, but Mia's coins grew for thirty years and his for twenty.
Time did the work. A bigger start helps, and it is never too late to start, but time is the part nobody can buy back.