Answer:
$9.15
Step-by-step explanation:
Contribution margin is the net value of sales and variable cost of a product. We need to deduct variable cost from selling price of a product to calculate the contribution margin .
First we need to determine the total variable cost.
Labor Cost ( $9 x ( 1 - 0.1 ) ) $8.1
Material cost $12.75
Shipping cost $2.50
Total Variable cost $23.35
Price = $32.50
Contribution Margin = Selling price - Variable cost
Contribution Margin = $32.50 - $23.35 = $9.15