This link has been bookmarked by 23 people . It was first bookmarked on 13 Dec 2007, by Joel Liu.
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Keith MacDonaldMental math method for quick calculation of compound interest, etc.
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08 Apr 10
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13 Dec 07
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By the way, the Rule of 72 applies to anything that grows, including population. Can you see why a population growth rate of 3% vs 2% could be a huge problem for planning? Instead of needing to double your capacity in 36 years, you only have 24. Twelve years were shaved off your schedule with one percentage point.
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29 Nov 07
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05 Oct 07
Alan DeanThe Rule of 72 is a great mental math shortcut to estimate the effect of any growth rate, from quick financial calculations to population estimates.
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