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The Rule Of 72

May 2024
1min read


There is a quick way to determine approximately how much time is required for anything that is compounding to double, whether it be a national economy, a sum of money in a bank account, or even, theoretically, rabbits in a hutch. Simply divide the annual percentage of increase into 72. Thus something that is growing at 10 percent a year will double in 7.2 years.

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