In: Finance
If money is invested for 8 years at a simple interest rate of 8.6% per annum, the nominal interest rate per annum, compounding monthly, is (as a percentage rounded to three decimal places; no % sign):
Let r be the rate compounded monthly
Hence,
(1+8.6%*8)=(1+r/12)^(12*8)
=>r=((1+8.6%*8)^(1/(12*8))-1)*12
=>r=6.5622%