The “Rule of 72”: calculate the number of years it'll take for your investment to double at a given interest rate by dividing 72 by the interest rate. For example, at 7.2% your investement will double in 10 years (72/7.2=10).

From: http://www.tradetricks.org/archives/2005_08.html

 
when_your_investiment_will_double_at_a_given_intrest_rate.txt · Last modified: 2010/06/16 13:42 (external edit)
 
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