Archive · With Solution

Daily Challenge — October 28, 2026

time value of money · mixed

Thorngate Industrial commits $850,000 to a specialized fixed-rate bond investment with a non-standard 7.35% annual interest rate, compounded quarterly for a complex 8-year holding period. The company needs to calculate the accumulated value and total interest earned to assess whether this investment meets its capital growth targets for operational expansion.

Correct Answers

future_value

$1,522,180.88

interest_earned

$672,180.88

Step-by-Step Solution

Compound Interest Formula: FV = P × (1 + r/m)^(m×t)
  Principal (P):         $850,000.00
  Annual Rate:           7.35%
  Compounding:           quarterly (m = 4)
  Total periods (n):     32
  Rate per period (r/m): 1.8375%

  FV = $850,000.00 × (1 + 1.8375%)^32
  FV = $850,000.00 × 1.790801
  FV = $1,522,180.88

  Interest Earned = FV − Principal = $1,522,180.88 − $850,000.00 = $672,180.88