Answer:
a. Assuming you purchased the bond for $850, what rate of return would you earn if you held the bond for 30 years until it matured with a value $5,000?
future value = present value x (1 + r)ⁿ
- future value = $5,000
- present value = $850
- n = 30
5,000 = 850 x (1 + r)³⁰
(1 + r)³⁰ = 5,000 / 850 = 5.882652
³⁰√(1 + r)³⁰ = ³⁰√5.882652
1 + r = 1.0608444
r = 0.0608444
r = 6.08%
b. Suppose under the terms of the bond you could redeem the bond in 2025. DMF agreed to pay an annual interest rate of 1.3 percent until that date. How much would the bond be worth at that time?
future value = present value x (1 + r)ⁿ
future value = 850 x 1.013⁷ = $930.43
c. In 2025, instead of cashing in the bond for its then current value, you decide to hold the bond until it matures in 2048. What annual rate of return will you earn over the last 23 years?
5,000 = 930.43 x (1 + r)²³
(1 + r)²³ = 5,000 / 930.43 = 5.373859398
²³√(1 + r)²³ = ²³√5.373859398
1 + r = 1.075849638
r = 0.0758
r = 7.58%