17. 4.21 Navistar Electric issued 1000 debenture bonds 3 years ago with a face value of $5000 each and a bond interest rate of 8% per year payable semiannually. The bonds have a maturity date of 20 years from the date they were issued. If the interest rate in the marketplace is 10%

per year compounded semiannually, determine the present worth today of one bond.