How to become rich: Nine golden personal finance rules | Ashish Aggarwal According to Ashish Aggarwal, the Rule of 72 applies to anything that grows exponentially, including population, macroeconomic data, and debts. Ashish Aggarwal explains that the economy is predicted to double in 18 years if the GDP expands at 4% annually. Additionally, the Rule of 72 demonstrates the long-term impact of fees, as a 3% annual expense fee can halve an investment principal in 24 years, and a 12% interest loan can double the amount owed in 6 years. Learn More: https://www.livemint.com/money...