In: Economics
Suppose that the typical firm in the perfectly competitive silk scarf market has a long run average
total cost curve that attains its minimum value at q=50 and at an average total cost of $25. The typical
firm’s average variable costs are minimized at q=25 and an average variable cost of $15. The market
demand for silk scarves is: QD = 10,000 – 100P. In a long run market equilibrium, how many firms
will there be?
A. N* = 300
B. N* = 150
C. N* = 50
D. N* = 0
E. N* = 100
Assume all fixed costs are sunk. The short run supply curve for a perfectly competitive firm is
A. the portion of its short run marginal cost curve that lies above its short run average total cost
curve.
B. the portion of its short run marginal cost curve that lies above its average variable cost curve.
C. the portion of the average variable cost curve that lies above its short run marginal cost curve.
D. the portion of its short run marginal cost curve that lies above its average fixed cost curve.
E. the portion of its short run average total cost curve that lies above its short run marginal cost
curve.
32. In which of the following circumstances would a cartel between firms be most likely to work?
A. The coffee market, where the product is standardized and there are a large number of coffee
growers.
B. The market for copper, where there are very few producers and the product is standardized.
C. The automobile industry, where there are few producers but there is great product differentiation.
D. The fast-food market, where there is a large number of producers but the demand for fast food is
inelastic.
E. The market for mozzarella cheese where they are only a few firms with very different marginal
cost structures.