Investment Rule of 72: In how many years, your Rs 5 lakh will turn into Rs 10 lakh in MFs, SBI FD, KVP

Ever wondered how long it takes to double your money? For investors eyeing their investment to grow fast, this is a critical question. In the world of personal finance, there is a powerful formula called the Rule of 72, offering a quick estimate of the time required for your investment to double at a fixed annualised rate of return or a fixed interest rate.