What discount rate would make you indifferent between receiving $3,566.00 per year forever and $5,964.00 per year for 28.00 years? Assume the first payment of both cash flow streams occurs in one year.
Present value of annuity=Annuity[1-(1+interest rate)^-time period]/rate
=$5964[1-(1+interest rate)^-28]/interest rate
Present value of perpetuity=Annual inflows/interest rate
=$3566/interest rate
$3566/interest rate=$5964[1-(1+interest rate)^-28]/interest rate
$3566=$5964[1-(1+interest rate)^-28]
($3566/$5964)=1-(1+interest rate)^-28
1-($3566/$5964)=(1+interest rate)^-28
[1/(1+interest rate)]^28=(0.402079141)
1+interest rate=[1/(0.402079141)]^(1/28)
1+interest rate=1.0331
interest rate=(1.0331-1)
=3.31%(Approx).
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