Have you heard of the Rule of 72 and its tremendous predictive power to illustrate the snowballing effect of compound interest and it's interesting.

Here's how it works: take the number of "72" and mentally divide it by the absolute value of an interest rate to quickly work out the number of years compound interest need to double your money.

So if you had invested $10,000 at a steady 6% each year, it will take you 12 years to grow that money to $20,000.

Hope this is of some help to all of us trying to double our money.


good luck.

Steve
Investing Money Guide

Don't know why it works, but there are all sorts of math marvels. I heard some guy demonstrating many on the radio.

Looks like you mostly wanted to advertise your website though.