Final answer:
The firm's operating income, with 6,100 units of the original product and 4,800 units of the new product sold, is calculated by applying the contribution margin of each and subtracting the total fixed costs. The resulting operating income is $34,340.
Step-by-step explanation:
To calculate the firm's operating income, we need to determine the contribution margin for both products, subtract the total fixed costs, and sum the results. The contribution margin for each unit of the original product is the selling price minus variable costs, which is $41.5 - $28.1 = $13.4 per unit. For the new product, it is $21 - $14 = $7 per unit. Multiplying the contribution margin by the number of units sold gives us the total contribution for each product.
- Original product: $13.4 * 6,100 = $81,740
- New product: $7 * 4,800 = $33,600
Finally, we subtract the total fixed costs from the combined contribution margin to calculate the operating income:
Total contribution margin: $81,740 + $33,600 = $115,340
Operating income = Total contribution margin - Total fixed costs
Operating income = $115,340 - $81,000 = $34,340