Final Answer:
a. The rate at which Springfield Learning is borrowing the money from investors is approximately 5.46%.
b. Nancy Muntz earned an annual rate of return of approximately 5.22%.
c. Barney Gumble would have earned an annual rate of return of approximately 3.73%.
Step-by-step explanation:
a. Rate at which Springfield Learning borrowed the money (Yield to Maturity):
Formula used: YTM = (Face Value / Present Value)¹/ⁿ - 1, where n is the number of periods
Given:
Present Value (PV) = $1,200, Face Value (FV) = $20,000, n = 35 years
YTM = ($20,000 / $1,200)¹/³⁵ - 1
YTM ≈ 5.46%
Nancy Muntz's rate of return after 15 years:
Calculate the annual rate of return using the compound interest formula: ( A = P(1 + r)ⁿ), where A is the final amount, P is the principal amount, r is the annual interest rate, and n is the number of years.
Given:
Initial investment (P) = $1,200, Selling price (A) = $3,400, n = 15 years
Rearrange the formula to find the annual rate of return (r).
r = (A / P)¹/ⁿ - 1
r = ($3,400 / $1,200)¹/¹⁵ - 1
r ≈ 5.22%
Barney Gumble's rate of return if he holds the bond for 20 years until maturity:
Use the same compound interest formula as in part b, considering the time period until maturity.
Given:
Initial investment (P) = $3,400 (the market price), Face Value (A) = $20,000, n = 20 years
r = (A / P)¹/ⁿ - 1
r = ($20,000 / $3,400)¹/²° - 1
r ≈ 3.73%
These calculations showcase the application of financial formulas to assess borrowing rates, investment returns, and potential yields, enabling a clear understanding of profitability in zero-coupon bond investments for both Springfield Learning and individual investors like Nancy Muntz and Barney Gumble.