This Exam FM sample reference tests Bond Valuation. Coupon amount is 500i, so Bond A's price simplifies to 500(1 + vᵐ) = 800 and vᵐ = 0.6; Bond B then costs 500(1 + 0.6³) = 608, choice C.
These notes identify the calculation error associated with each wrong letter when that error is reproducible.
AChoice A is inconsistent with the half-yield coupon bond price identities; no distinct standard single-step error producing it is identifiable.
BChoice B is inconsistent with the half-yield coupon bond price identities; no distinct standard single-step error producing it is identifiable.
DChoice D is inconsistent with the half-yield coupon bond price identities; no distinct standard single-step error producing it is identifiable.
EChoice E is inconsistent with the half-yield coupon bond price identities; no distinct standard single-step error producing it is identifiable.
Original practice · fully worked
Original variant: terminal discount factor from a coupon-yield relation
An m-year face-1,000 bond has price 800 and annual coupon rate equal to half its annual effective yield. Determine the discount factor through maturity.
A 0.40
B 0.50
C 0.60
D 0.70
E 0.80
Variant answer in brief
The coupon-yield relation reduces price to 500(1 + vᵐ); setting this to 800 gives vᵐ = 0.60, choice C.
Setup
Setup
Translate the coupon-rate condition into annual coupon amount 500i.
800=500iam∣i+1000vm
Model
Model
Replace i times the annuity factor by one minus the maturity discount factor.
800=500(1−vm)+1000vm
Compute
Compute
The bond-price equation becomes linear in that factor.
800=500+500vm⟹vm=0.60
Answer
Answer
The discount factor through maturity is 0.60, corresponding to choice C.
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