Final answer:
To determine the profit-maximizing quantity of output, calculate the total revenue, marginal revenue, total cost, and marginal cost. The profit-maximizing quantity is where marginal revenue equals marginal cost.
Step-by-step explanation:
To determine the profit-maximizing quantity of output, we need to calculate the total revenue, marginal revenue, total cost, and marginal cost for each output level. The table below shows the calculations:
Output Level Total Revenue Marginal Revenue Total Cost Marginal Cost
1 $20 $20 $20 $20
2 $40 $20 $45 $25
3 $60 $20 $80 $35
4 $80 $20 $130 $50
5 $100 $20 $210 $80
The profit-maximizing quantity of output is the level where marginal revenue equals marginal cost. From the table, we can see that this occurs at an output level of 2 units. At this level, the firm will maximize its profits.