Archive · With Solution

Daily Challenge — October 12, 2026

time value of money · mixed

Vanguard Manufacturing sets aside $850,000 from retained earnings into a corporate savings account earning 6.75% annually, compounded quarterly. The company plans to hold this fund for 8 years to finance a future plant expansion. Calculate the future value of this investment and determine the total interest earned over the 8-year period.

Correct Answers

future_value

$1,452,048.67

interest_earned

$602,048.67

Step-by-Step Solution

Compound Interest Formula: FV = P × (1 + r/m)^(m×t)
  Principal (P):         $850,000.00
  Annual Rate:           6.75%
  Compounding:           quarterly (m = 4)
  Total periods (n):     32
  Rate per period (r/m): 1.6875%

  FV = $850,000.00 × (1 + 1.6875%)^32
  FV = $850,000.00 × 1.708293
  FV = $1,452,048.67

  Interest Earned = FV − Principal = $1,452,048.67 − $850,000.00 = $602,048.67