Solution :
Given :
Coupon rate for Bond J = 3%
Coupon rate for Bond K = 9%
YTM = 6 %
Therefore,
The current price for Bond J = $ 718.54 =PV(6%/2,13x2,30/2,1000)x -1
The current price for Bond K = $ 1281.46 =PV(6%/2,13x2,90/2,1000)x -1
If the interest rate by 2%,
Bond J = $ 583.42 = -18.80% (change in bond price)
Bond K = $ 1083.32 = -15.46% (change in bond price)