This Exam FM sample reference tests Coupon Bond Price Relations. The zero price implies v to the n equals 0.89. Substituting a coupon rate equal to half the yield into the second price equation gives face value 941.80, choice B.
These notes identify the calculation error associated with each wrong letter when that error is reproducible.
AChoice A overstates the coupon contribution relative to the 5.5% of face present value implied by the formula.
CChoice C rounds the coefficient 0.945 before dividing 890, moving the face value upward.
DChoice D treats the coupon rate as half the discount rate d rather than half the effective yield i.
EChoice E does not satisfy 890 = 0.945F, the reduced common-yield price equation.
Original practice · fully worked
Original variant: price a coupon bond from a zero price
A 1,000 redemption-value zero-coupon bond with maturity n sells for 760. Another bond has the same maturity, yield, and redemption value. Its annual coupon rate equals 40% of that yield. Determine the second bond's price without solving for n or the yield.
A 760.00
B 808.00
C 856.00
D 904.00
E 1,000.00
Variant answer in brief
The zero price makes one minus v to the n equal 0.24. Coupons add 40% of the 240 discount, or 96, to the zero price. The result is 856, choice C.
Setup
Setup
Normalize the zero-bond price by its 1000 redemption value.
vn=1,000760=0.76
Model
Model
The annual coupon is 0.4 times 1000i. Use i times a-angle-n equals one minus v to the n.
P=1,000vn+0.4(1,000)ian∣i
Compute
Compute
Replace the annuity term by the maturity discount.
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