Future and present value of an annuity Find the future and present value of a 15-year ordinary annuity paying $100.00 per year at each of the following interest rates: a. 20% b. 10% c. 1% d. 0.1% e. What is the general principle that you see when you compare your answers here? What value are both the present value and future value getting close to as you move from part a to part d? a. The future value of a 15-year ordinary annuity paying $100.00 per year at an annual interest rate of 20% is $ (Round to the nearest cent.) The present value of a 15 -year ordinary annuity paying $100.00 per year at an annual interest rate of 20% is $ (Round to the nearest cent.)