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Daily Challenge — October 21, 2026

cost accounting · mixed

Quarry Hill Systems is a mid-sized manufacturer of industrial-grade seismic monitoring equipment headquartered in Denver, Colorado. The company sells its flagship SteadyWave Pro seismic sensor units to mining and construction firms across North America, and management wants to analyze overall profitability and identify the break-even point to guide production planning for the upcoming fiscal year.

Correct Answers

net Income

$7,166,400.00

break Even Sales

$2,854,035.71

break Even Units

5,608

contribution Margin Per Unit

224

Step-by-Step Solution

MIXED PROBLEM — Contribution Margin + Break-Even

CONTRIBUTION MARGIN INCOME STATEMENT:
  Sales (37,600 units × $509.00)         $19,138,400.00
  Less: Variable Costs (37,600 × $285.00) $10,716,000.00
  ─────────────────────────────────────────────────────────
  Contribution Margin                                   $8,422,400.00
  Less: Fixed Costs                                     $1,256,000.00
  ─────────────────────────────────────────────────────────
  Net Income                                            $7,166,400.00

Per Unit:
  CM per Unit = $509.00 − $285.00 = $224.00
  CM Ratio    = $224.00 ÷ $509.00 = 44.01%

BREAK-EVEN ANALYSIS:
  Break-Even Units = Fixed Costs ÷ CM per Unit
  Break-Even Units = $1,256,000.00 ÷ $224.00 = 5607.1429 → 5608 units (rounded up)

  Break-Even Sales = Fixed Costs ÷ CM Ratio
  Break-Even Sales = $1,256,000.00 ÷ 44.0079% = $2,854,035.71