How to do an investment is earning 10 per annum compound interestHow long will ot take for the investment to double in value method an explanation?

To determine how long it will take for an investment to double in value at a compound interest rate of 10% per annum, you can use the Rule of 72. This rule states that you divide 72 by the annual interest rate (in percentage) to estimate the number of years needed to double your investment. In this case, 72 ÷ 10 = 7.2 years. Therefore, it will take approximately 7.2 years for the investment to double.