It is what bankers,financiers & economists use. It is an approximation derived from a mathematical logarthmic equation that takes the amount of money , length of time & rate of return into consideration.
The Rule 72 simply states that if you divide 72 by the interest or ROI it tells you exactly the number of years your money doubles.
The Rule of 72 is popularly known as the magic of compounding interest.
Terrains 