Final answer:
The marginal cost of the fourth computer is $350, and while the marginal benefit of the fourth laptop is not directly provided, it could possibly be inferred from the selling price if we assume it correlates with marginal revenue. Marginal benefit equals the additional income from selling one more unit, and the listed prices could hint at potential marginal benefits for desktops and laptops.
Step-by-step explanation:
The marginal cost of producing an item is the cost to produce each additional unit. In this scenario, for the computer company, the marginal cost of producing the fourth computer is stated as $350. The description does not directly provide the marginal benefit of producing the fourth laptop. However, if the marginal revenue from the sale of the fourth laptop in a different example was $600 (and assuming it's the same in this case), then the marginal benefit of producing the fourth laptop would be this revenue amount, because it represents the additional income received from selling one more unit of a product.
To calculate the marginal benefit, we typically use the price at which the item is sold, which reflects the value to the consumer (the greater the price, the greater the marginal benefit). The constant prices for desktop and laptop computers ($5000 and $1000 respectively) offer insight on the potential marginal benefit for each produced unit, provided they are sold at these prices.