18. Suppose a bond is purchased with a settlement date of October 15 and the next cou- pon payment is on December 1. The par amount purchased on the bond is

$100,000, and its annual coupon rate is 4% paid semiannually. a. What is the accrued interest using the 30/360 day count convention? b. What is the accrued interest using the actual/actual day count convention?