Final answer:
a. The defendants have used an interest rate assumption of 6.59% in their offer. b. Anna and her lawyer have used an interest rate assumption of 10.74% in their counteroffer. c. Anna would accept an annual payment of $1,735,905 for 25 years with an interest rate assumption of 9%.
Step-by-step explanation:
a. To determine the interest rate assumption used by the defendants in their offer, we need to find the interest rate that will result in a present value of $2,000,000 for the annual payment of $156,000 for 25 years. Using a financial calculator or spreadsheet, we can find that the interest rate is approximately 6.59%.
b. Similarly, to find the interest rate assumption used by Anna and her lawyer in their counteroffer, we need to find the interest rate that will result in a present value of $2,000,000 for the annual payment of $255,000 for 25 years. Using the same calculation, we find that the interest rate is approximately 10.74%.
c. To find the annual payment that would be acceptable to Anna, we need to find the present value of the payment of $255,000 per year for 25 years using an interest rate assumption of 9%. Again, using a financial calculator or spreadsheet, we find that the present value is approximately $1,735,905.