Answer:
Product M Product C
Contribution margin per unit (a) $6 $7
Oven hours (b) 0.2 0.3
Contribution margin per oven (a/b) $30 $23.33
Here, the most profitable product is product M (Muffins).
Contribution margin = Contribution margin per oven * Oven capacity
Contribution margin = $30 * 1500 hours
Contribution margin = $45,000
So, the contribution margin of company is $45,000 if it produces only the most profitable product.