An n-year bond with semiannual coupons has the following characteristics:
i) The par value and redemption value are 2500;
ii) The annual coupon rate is 7% payable semi-annually;
iii) The annual nominal yield to maturity is 8% convertible semiannually; and
iv) The book value immediately after the fourth coupon is 8.44 greater than the book value immediately after the third coupon.
Calculate n.