Answer:
Contribution margin per unit = $45.90
Contribution margin as sales percentage = 43.97%
Explanation:
As for the information provided we have,
Normal Sales = Normal sales per month, before the overseas order.
For such normal sales, the cost and sales data has been provided,
Selling price per unit = $104.40
Variable costs = Direct material + Direct Labor + Variable Manufacturing + Variable selling & Administrative
= $43.80 + $10.40 + $1.90 + $2.40 = $58.50
Contribution margin per unit = Selling price - Variable cost per unit = $104.40 - $58.50 = $45.90
Contribution margin as sales percentage = 43.97%