This Exam FM sample reference tests Loan Amortization. Valuing the first five payments at 11% and the last five at 12% deferred five years gives factor 5.83516; hence X = 20,000/5.83516 = 3,427.50, choice C.
These notes identify the calculation error associated with each wrong letter when that error is reproducible.
AChoice A is inconsistent with the two-rate, two-block present-value equation; no distinct standard single-step error producing it is identifiable.
BChoice B is inconsistent with the two-rate, two-block present-value equation; no distinct standard single-step error producing it is identifiable.
DChoice D is inconsistent with the two-rate, two-block present-value equation; no distinct standard single-step error producing it is identifiable.
EChoice E is inconsistent with the two-rate, two-block present-value equation; no distinct standard single-step error producing it is identifiable.
Original practice · fully worked
Original variant: changing-rate loan for a neighborhood bakery
A bakery borrows 12,000 and repays it with eight equal year-end payments. Interest is 5% effective for the first four years and 7% effective for the last four. Find the level payment.
A 1,750.00
B 1,820.00
C 1,894.95
D 1,970.00
E 2,050.00
Variant answer in brief
The two four-payment blocks have combined value factor 6.33262, giving 1,894.95, choice C.
Setup
Setup
Partition the payments where the contractual rate changes.
12000=Pa4∣0.05+P(1.05)−4a4∣0.07
Model
Model
Value the later four-payment annuity at year four using 7%, then discount that value to the loan date through the 5% period.
12000=6.3326176P
Compute
Compute
Adding the early block gives a total factor of 6.3326176.
P=1894.9510
Answer
Answer
The level annual payment is 1,894.95, which is choice C.
The 2210-page Financial Mathematics Proof Manual reorganizes 461 verified Exam FM solutions by syllabus skill and adds formula proofs, error patterns, and original worked practice.