Independent solution
How to solve this Equivalent Discount Rate over Mixed Interest Regimes question
Setup
Setup
Accumulate the principal through the first two effective-rate years.
Model
Model
Integrate the later force from time 2 through time 5.
Compute
Compute
The terminal amount is 220.50. Define a constant annual effective discount over all five years.
Answer
Answer
Solving gives 14.627%, choice C.