Chapter 11: Problem 3
What are implicit costs? How are they different from explicit costs?
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Chapter 11: Problem 3
What are implicit costs? How are they different from explicit costs?
These are the key concepts you need to understand to accurately answer the question.
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Briefly explain whether you agree with the following argument: Adam Smith's idea of the gains to firms from the division of labor makes a lot of sense when the good being manufactured is something complex like automobiles or computers, but it doesn't apply in the manufacturing of less complex goods or in other sectors of the economy, such as retail sales.
In describing the optimal size of an investment fund, a writer for the Wall Street Journal observed: … at first, bigger is better for both investors and managers…. Managing money is expensive. Small funds have many fixed costs…. If a fund is small, it can’t generate enough fees to cover costs…. The result is that in terms of performance, funds should want to get big to cover costs and maximize returns, but not so big that diseconomies of scale erode returns. Draw a graph of a long-run average cost curve for a typical firm in the investment fund industry. In your graph, draw and label the following. a. A short-run average total cost curve for an investment fund that has not reached minimum efficient scale b. A short-run average total cost curve for an investment fund that has reached minimum efficient scale c. A short-run average total cost curve for an investment fund that experiences diseconomies of scale d. A range of output within which investment funds experience constant returns to scale
Which of the following are examples of a firm experiencing positive technological change? a. A fall in the wages JetBlue pays its mechanics leads it to lower its ticket prices. b. A training program makes a firm's workers more productive. c. An exercise program makes a firm's workers healthier and reduces the number of days the typical worker is absent. d. A firm cuts its workforce and is able to maintain its initial level of output. e. A firm rearranges the layout of its factory and finds that by using its initial set of inputs, it can produce exactly as much as before.
Explain how the events listed in (a) through (d) would affect the following costs at Southwest Airlines: 1\. Marginal cost 2\. Average variable cost 3\. Average fixed cost 4\. Average total cost a. Southwest signs a new contract with the Transport Workers Union that requires the airline to increase wages for its flight attendants. b. The federal government starts to levy a \(\$ 20\) -perpassenger carbon emissions tax on all commercial air travel. c. Southwest decides on an across-the-board 10 percent cut in executive salaries. d. Southwest decides to double its television advertising budget.
(This problem is somewhat advanced.) Using symbols, we can write that the marginal product of labor is equal to \(\Delta Q / \Delta L .\) Marginal cost is equal to \(\Delta \mathrm{TC} / \Delta Q .\) Because fixed costs by definition don't change, marginal cost is also equal to \(\Delta \mathrm{VC} / \Delta \mathrm{Q} .\) If jill Johnson's only variable cost (VC) is labor cost, then her variable cost equals the wage multiplied by the quantity of workers hired, or \(w \mathrm{~L}\) a. If the wage Jill pays is constant, then what is \(\Delta V C\) in terms of \(w\) and \(L ?\) b. Use your answer to part (a) and the expressions given for the marginal product of labor and the marginal cost of output to find an expression for marginal cost, \(\Delta \mathrm{TC} / \Delta \mathrm{Q},\) in terms of the wage, \(w,\) and the marginal product of labor, \(\Delta Q / \Delta L\) c. Use your answer to part (b) to determine Jill's marginal cost of producing pizzas if the wage is \(\$ 750\) per week and the marginal product of labor is 150 pizzas. If the wage falls to \(\$ 600\) per week and the marginal product of labor is unchanged, what happens to Jill's marginal cost? If the wage is unchanged at \(\$ 750\) per week and the marginal product of labor rises to 250 pizzas, what happens to Jill's marginal cost?
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