Answer :
Answer:
a.
Percentage change in Bill Price = (91.8486 - 100) / 100 = -0.0815 or -8.15%
Percentage change in Bill Price = (78.1448 - 100) / 100 = -0.2186 or -21.86%
b.
Percentage change in Bill Price = (109.0298 - 100) / 100 = 0.0903 or 9.03%
Percentage change in Bill Price = (132.0946 - 100) / 100 = 0.3209 or 32.09%
Explanation:
To calculate the percentage change in the price of both the bonds, we assume that the par value of both the bonds is $100 each.
a.
To calculate the price of the bond today, we will use the formula for the price of the bond. We assume that the interest rate provided is stated in annual terms. As the bond is a semi annual bond, the coupon payment, number of periods and semi annual YTM will be,
Coupon Payment (C) both Bill and Ted = 100 * 0.058 * 6/12 = $2.9
Total periods (n) - Bill= 5 * 2 = 10
Total periods (n) - Ted= 25 * 2 = 50
As the bonds were previously price at par, the YTM or market interest rate would have been same as the coupon rate. Thus, the old market interest rate was 5.8%. Now as the interest rates have risen by 2% new interest rate will be = 5.8 + 2 = 7.8%
New r or YTM - both Bill and Ted = 7.8% * 6/12 = 3.9% or 0.039
The formula to calculate the price of the bonds today is attached.
Bond Price - Bill = 2.9 * [( 1 - (1+0.039)^-10) / 0.039] + 100 / (1+0.039)^10
Bond Price - Bill = $91.8486
Percentage change in Bill Price = (91.8486 - 100) / 100 = -0.0815 or -8.15%
Bond Price - Ted = 2.9 * [( 1 - (1+0.039)^-50) / 0.039] + 100 / (1+0.039)^50
Bond Price - Ted = $78.1448
Percentage change in Bill Price = (78.1448 - 100) / 100 = -0.2186 or -21.86%
b.
As the bonds were previously price at par, the YTM or market interest rate would have been same as the coupon rate. Thus, the old market interest rate was 5.8%. Now as the interest rates have fallen by 2% new interest rate will be = 5.8 - 2 = 3.8%
New r or YTM - both Bill and Ted = 3.8% * 6/12 = 1.9% or 0.019
The formula to calculate the price of the bonds today is attached.
Bond Price - Bill = 2.9 * [( 1 - (1+0.019)^-10) / 0.019] + 100 / (1+0.019)^10
Bond Price - Bill = $109.0298
Percentage change in Bill Price = (109.0298 - 100) / 100 = 0.0903 or 9.03%
Bond Price - Ted = 2.9 * [( 1 - (1+0.019)^-50) / 0.019] + 100 / (1+0.019)^50
Bond Price - Ted = $132.0946
Percentage change in Bill Price = (132.0946 - 100) / 100 = 0.3209 or 32.09%

(A) When The Percentage change in Bill Price is = (78.1448 - 100) / 100 = -21.86%
(B) When Percentage change in Bill Price is= (132.0946 - 100) / 100 = 32.09%
Compute The Bond Price
To compute the percentage change in the price of both the bonds, we suppose that the par value of both the bonds is $100 each.
(A) To estimate the price of the bond today, we will use the formula for the price of the bond. We suppose that the interest rate supplied is stated in annual terms. As the bond is a semi-annual bond, the coupon payment, number of times, and semi-annual YTM will be,
Coupon Payment (C) both Bill and Ted is = 100 * 0.058 * 6/12 = $2.9
The Total periods (n) - Bill is= 5 * 2 = 10
The Total periods (n) - Ted is = 25 * 2 = 50
As the bonds were previously priced at par, the YTM or market interest rate would have been the same as the coupon rate. Therefore, the old market interest rate was 5.8%. Present as the interest rates have risen by 2% new interest rate will be = 5.8 + 2 is = 7.8%
When New r or YTM - both Bill and also Ted is = 7.8% * 6/12 is = 3.9% or 0.039
Then The formula to estimate the price of the bonds today is attached.
Bond Price - Bill is = 2.9 * [( 1 - (1+0.039)^-10) / 0.039] + 100 / (1+0.039)^10
Then Bond Price - Bill is = $91.8486
When the Percentage change in Bill Price is = (91.8486 - 100) / 100 = -0.0815 or -8.15%
Then Bond Price - Ted = 2.9 * [( 1 - (1+0.039)^-50) / 0.039] + 100 / (1+0.039)^50
Then Bond Price - Ted = $78.1448
The Percentage change in Bill Price is = (78.1448 - 100) / 100 = -0.2186 or -21.86%
(B) Now As the bonds were theretofore priced at par, the YTM or market interest rate would have been identified as the coupon rate. Therefore, the old market interest rate was 5.8%. Present as the interest rates have fallen by 2% new interest rate will be = 5.8 - 2 is = 3.8%
New r or YTM - both Bill and Ted = 3.8% * 6/12 is = 1.9% or 0.019
The formula to compute the price of the bonds today is attached.
Then Bond Price - Bill = 2.9 * [( 1 - (1+0.019)^-10) / 0.019] + 100 / (1+0.019)^10
After that Bond Price - Bill = $109.0298
Now the Percentage change in Bill Price = (109.0298 - 100) / 100 = 0.0903 or 9.03%
Then Bond Price - Ted = 2.9 * [( 1 - (1+0.019)^-50) / 0.019] + 100 / (1+0.019)^50
Then Bond Price - Ted = $132.0946
Therefore, Percentage change in Bill Price = (132.0946 - 100) / 100 = 0.3209 or 32.09%
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