ECONOMICS (CBSE/UGC NET)

Detailed explanation-1: -You simply take 72 and divide it by the interest rate number. So, if the interest rate is 6%, you would divide 72 by 6 to get 12. This means that the investment will take about 12 years to double with a 6% fixed annual interest rate.

Detailed explanation-2: -A borrower who pays 12% interest on their credit card (or any other form of loan that is charging compound interest) will double the amount they owe in six years. The rule can also be used to find the amount of time it takes for money’s value to halve due to inflation.

Detailed explanation-3: -Do you know the Rule of 72? It’s an easy way to calculate just how long it’s going to take for your money to double. Just take the number 72 and divide it by the interest rate you hope to earn. That number gives you the approximate number of years it will take for your investment to double.

Detailed explanation-4: -If you earn 12% on average, this rule calculates that your money doubles in 72/12 = six years. If you earn on average 8%, your investment should double in approximately 72/8 = nine years.

Detailed explanation-5: -To use the Rule of 72 in order to determine the approximate length of time it will take for your money to double, simply divide 72 by the annual interest rate. For example, if the interest rate earned is 6%, it will take 12 years (72 divided by 6) for your money to double.