Time Value of Money Problems (FIN 3300) 7. Calculate the present value of an annuity of $6,000 received quarterly that begins today and continues for 25 years, assuming a discount rate of 10%. 8. Calculate the future value of an ordinary annuity of $250 paid every month for 30 years, assuming an annual earnings rate of 12%. 9. Calculate the future value of a quarterly annuity of $2,000 beginning today and continuing for 10 years, assuming an annual earnings rate of 10%