Assume you purchase a three-year, 9% coupon bond for $950. Suppose interest rates have remained stable.
Find the interest rate first
Using financial calculator, enter FV=1000; PV= -950; N=3; PMT=9%*1000=90
Solve for I/Y as 11.05
1. Price of the bond with 1 year left to maturity= Coupon*(1-1/(1+r)^n)/r + FV/(1+r)^n
= 9%*1000*(1-1/(1+11.05%)^1)/11.05%+ 1000/(1+11.05%)^1
= 81.04457452+ 900.4952724
= 981.54
2.
Price of the bond with 2 years left to maturity= Coupon*(1-1/(1+r)^n)/r + FV/(1+r)^n
= 9%*1000*(1-1/(1+11.05%)^2)/11.05%+ 1000/(1+11.05%)^2
= 154.0248307+ 810.8917356
= 964.92
3. rate of return on the investment = (selling price-Initial cost+coupon)/Initial cost
= (964.92-950+90)/950
= 0.1104421053
= 11.04%
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