It seems that Helen has a rich aunt, Maggie. Maggie offered to give her niece, Helen, $550, starting next year, and after that growing at 5% for the next 20 years.

• What is the value of this offer? E.g., how much money Helen would need to deposit in her bank today, so that the account will generate the same cash flows as Maggie is offering her?
• Using an Excel spreadsheet, show that Helen can deposit this amount of money (as calculated from above) into her account, and every year withdraw what her aunt Maggie has promised, leaving the account with nothing after the last withdrawal. Helens local bank gives a 9% annual interest rate.