Answer:
17.26%
YTM falls to 16.62%
YTM rises to 19.34%
Explanation:
The bond yield to maturity is the computed using excel rate formula given below:
=rate(nper,pmt,-pv,fv)
nper is the number of semiannual coupons the bond has i.e 14*2=28
pmt is the semiannual coupon of the bond=$1000*12%/2=$60
pv is the current market price of $725
fv is the face value of $1000
=rate(28,60,-725,1000)=8.63%
The 8.63% is semiannual yield , the annual yield=8.63% *2=17.26%
28 years:
=rate(28*2,60,-725,1000)=8.31% *2=16.62%
7 years:
=rate(7*2,60,-725,1000)=9.67%*2=19.34%