I need help solving this problem

Intro Your grandmother left you $80,000 that you'll receive when you turn 40 in 22 years. Since you'd rather have some money now, you want to sell your claim to the inheritance. Part 1 [1 1 Attempt 1/10 for 10 pts. What is the minimum amount that you should sell your claim for now if the interest rate is 4% ? Part 2 Attempt 1/10 for 10 pts. What is Ine minimum amount that you should sell your claim for now if the interest rate is 9%