The Rule of 72 is a shortcut or rule of thumb used to estimate the number of years required to double your money at a given annual rate of return and vice versa.
Money Digest on MSN
Living Off Investment Interest: The Math Is Easier Than You Think
If you're picturing a stress-free retirement where you live off investment interest, use this easy formula to calculate how much of a principal you'll need.
Discover how to calculate internal rate of return (IRR) to evaluate investment opportunities and understand their potential ...
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