The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Related Content Choosing a Business Structure Entrepreneurs all face the same question, “Which business structure should I adopt?” The Fed and How It Got That Way Here is a quick history of the Federal Reserve and an overview of what it does. Do Your Kids Know The Value of a Silver Spoon? You taught them how to read and how to ride a bike, but have you taught your children how to manage money?