# compunded interest

• September 22nd 2009, 10:35 AM
mikegar813
compunded interest
If an amount of money invested doubles itself in 8 years at an interest compounded continuously, how long will it take for the original amount to triple it self?
• September 22nd 2009, 10:46 AM
skeeter
Quote:

Originally Posted by mikegar813
If an amount of money invested doubles itself in 8 years at an interest compounded continuously, how long will it take for the original amount to triple it self?

$
A = A_0 \, e^{rt}
$

work it ...
• September 22nd 2009, 11:05 AM
mikegar813
12.6797 years?
• September 22nd 2009, 11:08 AM
mikegar813
ln3/(ln2/8)= 12.6797
• September 22nd 2009, 07:35 PM
Wilmer
Quote:

Originally Posted by mikegar813
ln3/(ln2/8)= 12.6797

Correct.