Answer:
Price of the bond decreases by $92.60 or decreases by 2.09%
Step-by-step explanation:
Semiannual coupon payment = 5,000 x 6.4%/2 = $160.
+ Price between yield to maturity changes ( YTM = 8.1%/2 = 4.05%):
Price of the bond = [ (160/0.0405) x ( 1 - 1.0405^-20) ] + 5,000/1.0405^20 = $4,424.96.
+ Price between yield to maturity changes ( YTM = 8.4%/2 = 4.2%):
Price of the bond = [ (160/0.042) x ( 1 - 1.042^-20) ] + 5,000/1.042^20 = $4,332.36.
=> Price of the bond decreases by $92.60 ( 4,332.36- 4,424.96) or decreases by 2.09% (4,332.36/4,424.96 - 1).