Bond Atox pays semi-annual coupon payments at the rate of 7%

Bond Atox pays semi-annual coupon payments at the rate of 7% p.a.The coupon dates are 1 May and 1
November each year.The bond has four years to maturity with a face value of $100.The yield of
similar risk bonds in the market is 8% p.a.
Required:
(a) What is the semi-annual coupon payment?
(b) Calculate the price of the bond on 1 November 2009.
(c) You wish to buy Bond Atox on 1 December 2009.Given that the market price is $102.55,calculate
the effective market price of the bond as at 1 December 2009.
Note:Effective market price = actual market price + accrued interest
(d) If immediately after you purchase the bond,the expected return changes to 7.5% p.a.,what will the
market price be?How much has your bond investment gained or lost in value with this change in
market expectations?
请问有没有人知道怎么做啊