<PRE><B>Question 889498</B>
Do it like this one:
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How long will it take $3000 to double if it is invested in an account that pays 3% compounded continuously?
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FV = PV*e^(rt)
2PV = PV*e^(0.03t)
e^(0.03t) = 2
0.03t = ln(2)
t = ln(2)/0.03
t =~ 23.1 years 

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