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Daily Challenge — September 7, 2026

cost accounting · mixed

Thornfield Defense Corp. is a mid-sized defense contractor based in Huntsville, Alabama, specializing in the manufacture of tactical body armor systems for military and law enforcement clients. Management is conducting a profitability review for the current fiscal year and needs to determine the contribution margin, net income, and break-even point to inform upcoming contract bidding decisions.

Correct Answers

net Income

$3,402,200.00

break Even Sales

$2,150,731.18

break Even Units

5,909

contribution Margin Per Unit

186

Step-by-Step Solution

MIXED PROBLEM — Contribution Margin + Break-Even

CONTRIBUTION MARGIN INCOME STATEMENT:
  Sales (24,200 units × $364.00)         $8,808,800.00
  Less: Variable Costs (24,200 × $178.00) $4,307,600.00
  ─────────────────────────────────────────────────────────
  Contribution Margin                                   $4,501,200.00
  Less: Fixed Costs                                     $1,099,000.00
  ─────────────────────────────────────────────────────────
  Net Income                                            $3,402,200.00

Per Unit:
  CM per Unit = $364.00 − $178.00 = $186.00
  CM Ratio    = $186.00 ÷ $364.00 = 51.10%

BREAK-EVEN ANALYSIS:
  Break-Even Units = Fixed Costs ÷ CM per Unit
  Break-Even Units = $1,099,000.00 ÷ $186.00 = 5908.6022 → 5909 units (rounded up)

  Break-Even Sales = Fixed Costs ÷ CM Ratio
  Break-Even Sales = $1,099,000.00 ÷ 51.0989% = $2,150,731.18