Answer:
Margin of safety = $4,050
Margin of safety as a percentage of sales % = 15.625
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