1. Calculate the present value of an annuity stream that pays
$20,000 every year for 5 years on the last day of each year if your
investment pays 20% compounded quarterly?
2. Calculate the future value of $20,000 invested today for 6 years
if your investment pays 4% compounded annually
3. Calculate the future value of an annuity stream that pays $6,000
every year for 5 years on the last day of each year if your
investment pays 10% compounded semi annually?
1.
Annual interest rate, Compounded quarterly = 20%
Quarterly interest rate = 20%/4 = 5% = 0.05
Effective annual interest rate = 1.054 – 1 = 0.2155 = 21.55%
Present value of annuity = Annuity amount * {1-(1+r)-n}/r
Present value of annuity stream = $20,000*(1-1.2155-5)/0.2155 = $57,827.61
2.
Future value of investment = Amount invested*(1+r)n
Future value = $20,000*1.046 = $25,306.38
3.
Annual interest rate, compounded semi-annually = 10%
Semi-annual interest rate = 10%/2 = 5% = 0.05
Effective annual interest rate = 1.052 – 1 = 0.1025 = 10.25%
Future value of annuity = Annuity amount*{(1+r)n-1}/r
Future value of annuity stream = $6,000*(1.10256-1)/0.1025 = $46,586.71
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