How much would you have to invest today to receive:
a. $15,000 in 8 years at 10 percent?
b. $20,000 in 12 years at 13 percent?
c. $6,000 each year for 10 years at 9 percent?
d. $50,000 each year for 50 years at 7 percent?
Here we have to find out the present value of annuity
P=present value, A= Annuity r= rate of interest ...
This explains the steps to compute present value of annuity with examples