You have just received a windfall from an investment you made in a friend's business. She will be paying you

$29,980

at the end of this year,

$59,960

at the end of nextyear, and

$89,940

at the end of the year after that (three years from today). The interest rate is

13.6%

per year.

a. What is the present value of your windfall?

b. What is the future value of your windfall in three years (on the date of the last payment)?