Answer:
Margin of safety = $4,050
Margin of safety as a percentage of sales % = 15.625
Step-by-step explanation:
Requirement 1:
Selling Price = 27
Variable cost = 16
Contribution per unit = $27 - $16 
 = $11
Fixed cost = $8,910
Break even sales: 
= (Fixed cost ÷ Contribution per unit) ÷ Selling price per unit
= (8,910 ÷ 11) × 27
= 21,870
Expected Sales = Units sold per month × Selling price per unit
 = 960 × 27 
 = 25,920
Margin of safety = Expected Sales – Break even sales
 = 25,920 - 21,870
 = 4,050
Margin of safety = $4,050
Requirement 2:
Margin of safety ratio = (Margin of Safety ÷ Expected sales) × 100
 = (4,050 ÷ 25,920) × 100
 = 15.625
Margin of safety as a percentage of sales % = 15.625