Question 857872
How long would it take to double your principal in an account that pays 6.5% annual intrest compounded continuously? 
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{{{FV = 2*PV = PV*e^(rt)}}}
{{{e^(rt) = 2}}}
{{{e^0.065t = 2}}}
0.065t = ln(2)
t = ln(2)/0.065
t =~ 10.6638 years