Use the Rule of 72 again to do the maths. This time you divide 72 by the inflation you are projecting into the future. For example, if we think inflation will be 6 per cent in the future, divide 72 by 6. This means you will spend twice of today’s expenditure in twelve years. If you spend Rs 1 lakh a month, in twelve years you will spend Rs 2 lakhs a month. In another twelve years, you will be spending Rs 4 lakhs a month; in another twelve years, you will be spending Rs 8 lakhs a month. Remember: Divide 72 with your inflation number to get the number of years it will take to double your current
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