# Math Help - compunded interest

1. ## 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?

2. 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 ...

3. 12.6797 years?

4. ln3/(ln2/8)= 12.6797

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