Company A: $100,000 / $50,000 = 2
Company B: $200,000 / $50,000 = 4
Break-even sales = $50,000 / ($100,000 / $400,000) = $200,000
Margin of safety = $400,000 − $200,000 = $200,000
Break-even sales = $150,000 / ($200,000 / $400,000) = $300,000
Margin of safety = $400,000 − $300,000 = $100,000
Increase in net income = (.20 × 2) × $50,000 = $20,000
Net income = $50,000 + $20,000 = $70,000
Increase in net income = (.20 × 4) × $50,000 = $40,000
Net income = $50,000 + $40,000 = $90,000