Determine the per annum interest rate required for an investment with continuous compound interest to triple in 8 years. Express your answer as a percent. Enter an exact answer or round to three decimal places, for example 10.227%.
The answer I got was ln3/8 but it says its wrong idk y?

Question

Determine the per annum interest rate required for an investment with continuous compound interest to triple in 8 years. Express your answer as a percent. Enter an exact answer or round to three decimal places, for example 10.227%. 
The answer I got was ln3/8 but it says its wrong idk y?

anonymous · Answer

$$3=e^{8t}$$
$$t=\frac{\ln(3)}{8}$$ what you said

anonymous · Answer

maybe it does not like your rounding

anonymous · Answer

? ok cause that is wat I got

anonymous · Answer

or maybe it wants you to write 
$$\frac{\ln(3)}{8}$$ and you entered 
$$\frac{\ln 3}{8}$$ who knows?

anonymous · Answer

i tried both lol
thanks anyway