THE RULE OF 115 - Most everyone is familiar with The "Rule of 72"
 THE RULE OF 115 - Most everyone is familiar with The "Rule of 72"...just divide the annual interest rate into 72 and the results will be the approximate number of years it will take for money to double. You can also use the reverse by dividing the number of years into 72 and the result is the interest rate required to double the money. The "Rule of 115" works the same, but the result provides the number of years and/or interest rate required for money to triple.
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