Answer and Explanation:
The computation is shown below:
As we know that
Contribution Margin Ratio is
= contribution margin ÷sales
For Blanc Company
= 180000 ÷ 450000
= 0.40
For Noir Company
= 225000 ÷ 450000
= 0.50
a.
Break-even point = Fixed Costs ÷ Contribution Margin Ratio
For Blanc Company
= 162000 ÷ 0.40
= $405,000
For Noir Company
= $207000 ÷ 0.50
= $414000
2.
Margin of Safety Ratio = (Actual Sales - Break-even Sales) ÷ Actual Sales
For Blanc Company
= (450000 - 405000) ÷ 450000
= 10%
For Noir Company
= (450000 - 414000) ÷ 450000
= 8%
3.
Degree of Operating Leverage = Contribution Margin ÷ Net Income
For Blanc Company
= 180000 ÷ 18000
= 10
For Noir Company
= 225000 ÷ 18000
= 12.5