Final answer:
Beatrice's total profit at the profit-maximizing quantity requires details from table 16-6, which are not provided. Using an example from another table, the profit is calculated as total revenue minus total cost, which equals $60. However, the actual answer for Beatrice's profit requires the specific data from table 16-6.
Step-by-step explanation:
To determine Beatrice’s total profit at the profit-maximizing quantity, we must analyze the provided table 16-6. However, since the specific data from table 16-6 is not provided in your question, I'll use the provided table 10.1 for illustration purposes. According to that table, at an output of 40, the firm's total revenue is $640, and the total cost is $580. Therefore, the profit is calculated by subtracting the total cost from the total revenue, which equals $60 ($640 - $580). This figure represents the area above the average cost curve, indicating economic profits.
However, as the information from table 16-6 is not included, to accurately answer the original question regarding Beatrice's total profit at the profit-maximizing quantity, the specific details from table 16-6 regarding revenue, costs, and quantity would be needed.