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The rule number (e.g., 72) is divided by the interest percentage per period (usually years) to obtain the approximate number of periods required for doubling. Although scientific calculators and spreadsheet programs have functions to find the accurate doubling time, the rules are useful for mental calculations and when only a basic calculator ...
The Rule of 72 is a mathematical shortcut used to determine the time it takes to double your money. ... For simple interest, you’d simply divide 1 by the interest rate expressed as a decimal. If ...
The Rule of 72 is a calculation that estimates how long it will take an investment to double based on a specific yearly return. Simply divide 72 by your anticipated rate of return to get the ...
This "Rule of 70" gives accurate doubling times to within 10% for growth rates less than 25% and within 20% for rates less than 60%. Larger growth rates result in the rule underestimating the doubling time by a larger margin. Some doubling times calculated with this formula are shown in this table. Simple doubling time formula:
For example, compounding at an annual interest rate of 6 percent, it will take 72/6 = 12 years for the money to double. The rule provides a good indication for interest rates up to 10%. In the case of an interest rate of 18 percent, the rule of 72 predicts that money will double after 72/18 = 4 years.
Continue reading → The post What Is the Rule of 72? appeared first on SmartAsset Blog. After all, these returns may often seem abstract and distant. But being able to determine a time frame for ...
A simple fraction (as with 12/78) consists of a numerator (the top number, 12 in the example) and a denominator (the bottom number, 78 in the example). The denominator of a Rule of 78s loan is the sum of the integers between 1 and n, inclusive, where n is the number of payments.
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