If you've dabbled in investing, you've likely heard of the "Rule of 72." It's a back-of-the-envelope metric for calculating how quickly an investment will double in value. Most financial metrics are ...

You have that slide rule in the back of the closet. Maybe it was from your college days. Maybe it was your Dad’s. Honestly. Do you know how to use it? Really? All the scales? That’s what we thought.

Who doesn’t want to make more money with less effort? That’s where the 80/20 rule can come in handy. For You: Here’s How Much a $1,000 Investment in Ford Stock 10 Years Ago Would Be Worth Today Check ...

A third edition, soft cover textbook titled, Slide Rule: How to Use It (Barnes & Noble Everyday Handbooks Series #254), by Calvin C. Bishop. The soft cover book has glossy front and back paper covers.