If an industry has 25 firms that collectively have $150 million in total sales and the top four firms in this industry account for $90 million in sales, what is the concentration ratio of the top four firms in this industry?
A. 70 percent
B. 80 percent
C. 60 percent
D. 42 percent
Answer: C
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Suppose we are studying the market for electricity provision.
Suppose we are studying the market for electricity provision. Electricity provision requires costly grids and cables, thus Electricity production exhibits economies of scale in the long-run. In a given region there is only one electricity provider.
Below is the graph depicting the market for regional electricity providers:
What is the profit maximizing level of output?
What price will the firm set?
How much more output would be produced at the competitive market equilibrium?
What is the dead weight loss at the monopoly market outcome?
True/False. Electricity provision is a monopoly market because of patent protection.
True/False. The firm earns positive profit at the monopoly market outcomes.
More competing firms enter the electricity market. What will happen.
In an open economy, injections and leakages are related as:
A) I + G = S + T. B) I + G + X = S + T + M. C) X + G = T + M. D) none of the above
Explain the main difference between the pay-as-you-go system employed by Social Security and a private pension plan
What will be an ideal response?
Refer to Scenario 7.3. When Q = 200, what is the marginal cost?
A) 0 B) 5 C) 10 D) 15 E) 25