Final answer:
The value of bonds varies depending on the interest rate due to present value calculations. Bond L's value is more sensitive to changes in interest rates compared to Bond S because it has more future payments impacted by the interest rate. The correct explanation for this sensitivity is that long-term bonds have greater interest rate risk.
Step-by-step explanation:
To determine the present value of both bonds, we will use the present value of an annuity formula for Bond L and the present value of a single payment for Bond S. Let's denote the face value of the bonds as F, the annual coupon rate as C, the current market interest rate as r, and the number of years to maturity as t.
The formula for the present value of an annuity (which is applicable to Bond L's periodic coupon payments) is PV = C * [(1 - (1 + r)^(-t)) / r]. The formula for the present value of a single future payment (applicable to Bond S) is PV = F / (1 + r)^t.
Given that F = $1,000, C = F * 6% = $60, we can calculate the values:
- Value of Bond L with r = 4%: PV = $60 * [(1 - (1 + 0.04)^(-19)) / 0.04] + $1,000 / (1 + 0.04)^19 = $1,086.59
- Value of Bond S with r = 4%: PV = $1,000 / (1 + 0.04)^1 = $961.54
- Value of Bond L with r = 10%: PV = $60 * [(1 - (1 + 0.10)^(-19)) / 0.10] + $1,000 / (1 + 0.10)^19 = $527.63
- Value of Bond S with r = 10%: PV = $1,000 / (1 + 0.10)^1 = $909.09
- Value of Bond L with r = 11%: PV = $60 * [(1 - (1 + 0.11)^(-19)) / 0.11] + $1,000 / (1 + 0.11)^19 = $493.37
- Value of Bond S with r = 11%: PV = $1,000 / (1 + 0.11)^1 = $900.90
This is because longer-dated bonds have more remaining coupon payments that will be impacted by a change in discount rates, causing a more significant change in present value.