Answer:
Discount Rate = 9%
Step-by-step explanation:
Martha won: $16,800,000
Number of installments = 30
The annual payment = amount won/ number of installments
= 16,800,000 / 30 = $560,000
___________________________
Individual share of 50% each = $560,000 * 50% = $280,000
Since the investor offered Martha $2,555,980 which is the future value for the remaining period of 20 years, we have:
Future Value = Present Value x PVAF (I, 20 Years)
$2,555,980 = $280,000 × PVIFA (I, 20 years)
PVIFA (I, 20 years) = 2555980/280000
PVIFA (I, 20 years) = 9.1285
From Present value annuity Tables, the factor value for 20 years 9.1285 is for 9%
Therefore, the discount rate the investor used in calculating the purchase price is 9%