The correct answer is B. To find out how long it will take your money to double
Explanation:
In finance, Rule 72 refers to a simple formula that is used to know how much time is necessary for an investment to double considering the annual interest rate of the investment. This has been named Rule 72, because for determining how long it will take your investments to double you need to divide 72 by the rate of interest. For example, if you invested $2000 with a rate interest of 5% per year it will take 14.4. years to double the money you invested as 72/5 = 14.4. According to this, the Rule of 72 is needed to out how long it will take your money to double.
