Bankrate on MSN

Rule of 72: What it is and how to use it

Here’s how the Rule of 72 works: Divide 72 by your expected annual interest rate (as a percentage, not a decimal). The answer is roughly the number of years it will take for your money to double. For ...
AOL

Here’s How the Compound Interest Formula Works

While some might argue that compound interest is the most powerful force in the universe, it is undoubtedly one of the most powerful financial forces on Earth. Understanding how compound interest ...