Final answer:
The firm's accounting profit is $50,000.
Step-by-step explanation:
The firm's accounting profit can be calculated by subtracting the explicit costs from the total revenues. In this case, the firm's total revenues were $1 million, and the explicit costs included labor ($600,000), capital ($150,000), and materials ($200,000). So, the accounting profit is $1,000,000 - ($600,000 + $150,000 + $200,000) = $50,000.