Exhibit 8-11 A firm's cost and marginal revenue curves B 7 CO 6 Cost, revenues 5 (dollars) 4 3 2 1 0 78 10 In Exhibit 8-11, when the price is $5, the firm: O a. should produce output equal to 10. Ob. is breaking even. Oc. should produce output equal to 7. Od. is making an economic profit of $21. MC P=MR=8 ATC P=MR=5 AVC P=MR=2
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- Suppose that each firm in a competitive industry has the following costs: Total cost: TC = 50 + q2 Marginal cost: MC = q where q is an individual firms quantity produced. The market demand curve for this product is Demand:QD = 120 P where P is the price and Q is the total quantity of the good. Currently, there are 9 firms in the market. a. What is each firms fixed cost? What is its variable cost? Give the equation for average total cost. b. Graph average-total-cost curve and the marginal-cost curve for q from 5 to 15. At what quantity is average-total-cost curve at its minimum? What is marginal cost and average total cost at that quantity? c Give the equation for each firms supply curve. d. Give the equation for the market supply curve for the short run in which the number of firms is fixed. e. What is the equilibrium price and quantity for this market in the short run? f. In this equilibrium, how much does each firm produce? Calculate each firms profit or loss. Is there incentive for firms to enter or exit? g. In the long run with free entry and exit, what is the equilibrium price and quantity in this market? h. In this long-run equilibrium, how much does each firm produce? How many firms are in the market?Suppose that the market price increases to 6, as Table 8.14 shows. What would happen to the profit-maximizing output level?The AAA Aquarium Co. sells aquariums for 20 each. Fixed costs of production are 20. The total variable costs are 20 for one aquarium, 25 for two units, 35 for the three units, 50 for four units, and 80 for five units. In the form of a table, calculate total revenue, marginal revenue, total cost, and marginal cost for each output level (one to five units). What is the Profit-maximizing quantity of output? On one diagram, sketch the total revenue and total cost curves. On another diagram, sketch the marginal revenue and marginal cost curves.
- Price and costs (dollars) 20 16 12 8 4 0 5 10 MC ATC 20 15 Quantity (per day) The figure above shows short-run cost curves for a perfectly competitive firm. If the price of the product is $8, in the short run the firm will Select one: O a. incur an economic loss O b. earn an economic profit O c. earn a normal profit O d. None of the provided answers is correct because more information is needed to determine the firm's profit or lossFim A Firm B Price and Cost (dolars) Pnce and Cost (dolars) MC MC ATC 11 - 11 10 10 AVC ATC 8. 8. AVC 7. 2. 0 / 100 150 200 Quantity 70 90 100 150 Quantity Refer to Exhibit 22-8. What is the profit (loss) of firm A at the profit-maximizing (or loss-minimizing) level of production? O $300 O $270 O $600 O $400 O$300Q23 Suppose a perfectly competitive firm is currently operating with the following information: Output = 1500 tonnesAverage total cost = $627 per tonneAverage variable cost = $614 per tonneMarginal revenue = $620 per tonneMarginal cost = $620 per tonneAt the current level of output, this firm is _____ profit and is an earning economic profit of _____. a. Maximising; -$10500. b. Not maximising; -$10500. c. Maximising; $10500. d. Maximising; $9000. e. Not maximising; -$9000.
- QUESTION 5 Assume the XYZ Corporation is producing 20 units of output. It is selling this output in a purely competitive market at $10 per unit. Its total fixed costs are $100 and its average variable cost is $3 at 20 units of output. This corporation O A. should close down in the short run O B. is maximizing its profits OC. is realizing a loss of $60 O D. is realizing an economic profit of $40QUESTION 7 Assume the XYZ Corporation is producing 20 units of output. It is selling this output in a purely competitive market at $10 per unit. Its total fixed costs are $100 and its average variable cost is $3 at 20 units of output. This corporation O A. should close down in the short run O B. is maximizing its profits O C. is realizing a loss of $60 O D. is realizing an economic profit of $4025. This question refers to the figure below which shows the price, marginal cost, and average cost curves facing a perfectly competitive firm in the short run. What is the total daily revenue of the profit-maximising firm in the short run? Cost, price (Rand) a) b) c) P 20 12 8 0: R800 R2 000 R960 60 ВО 100 Output per day MC AC Price AVC
- Figure 6.1 MC ATC AVC MR2 MR, 30 40 50 60 Quantity Refer to Figure 6.1. Given MR2, what is total revenue if the firm produces 60 units and the lowest point of the average-total-cost curve is $4? O $400 O$240 O$440 O S300Figure 14-1 Suppose that a firm in a competitive market has the following cost curves: 20 ATC 18 16 AVC 14 13 H 12 6. MC 2 1 2 3 QUANTITY Refer to Figure 14-1. If the market price is $13, the firm will earn O a. positive economic profits in the short run. O b. zero economic profits in the short run. O c. negative economic profits in the short run but remain in business. O d. negative economic profits and shut down.Suppose that a firm in a competitive market has the following cost curves: PRICE 20 18 16 41312 10 12 8 6 4 N + MC 2 c. less than $13 but more than $6. d. less than $6. 3 QUANTITY ATC AVC 5 Refer to Figure 14-1. The firm will earn a negative economic profit but remain in business in the short run if the market price is a. above $13 but less than $18. b. above $13.