Quickly Estimate Your Investment Returns with Rule of 72

Briefly, it helps us with a simplified formula which can immediately gives us an estimation on how long it will take for our Fixed Deposit (FD) in the bank could double (It will take a very long time) or how quickly could our credit card debt doubles (very quickly, actually if we start accumulating). So, this is a super handy way for us to quickly compare between two different type of investments.