In how much time will my money double..??
By using it, you get to know in how much will it take to double your money.
Suppose you invest in Fixed Deposit that offers 8% rate of return. You have to just divide 72 by 8. You get to know that your money will double in 9 years.
In case of Mutual Fund, average return is around 12%, if you divide 72 by 12, the answer is 6, which means your money will double in 6 years.
Money makes money. And the money that money makes, makes money.