Assume that a purely competitive firm is selling 2000 television sets a day at a cost of $90,000. Assume that if the firm sells 1600 units per day, its total cost would be $60,000, and if it sold 1000 units per day, it would have a total cost of $55,000.

- Calculate the average total cost at these different sales levels.
- Assuming that the cost structure for every firm in the industry is identical, do you think that the industry could be in long-run equilibrium?
- If the industry is perfectly competitive, what would be the long-run equilibrium market price?
- If your answer to c is the market price and every firm in the industry is earning a normal profit of 15 percent, calculate what that profit would be.