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Suppose a firm that manufactures bicycles has the following cost structure:

Suppose a firm that manufactures bicycles has the following cost structure: a. How mu? does this...

a. How mu does this firm have in fixed costs?

b. Using graph paper or a computer program, graph the total cost curve for this firm. Suppose that bicycles sell for $200 each, and the firm is a price taker. Create a table showing the marginal cost, total cost, marginal revenue, total revenue (price × quantity), and total profit (total revenue – total cost) at each level of production.

c. Add a total revenue curve to the graph that you created in (b). Indicate with arrows the approximate quantity at which the vertical distance between the two curves is the greatest.

d. Would the firm make a profit by producing and selling only one bicycle? Would one bicycle be the best output level for the firm? What is the output level that maximizes profits?

 
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Suppose that a perfectly competitive firm manufactures gizmos with the following cost structure (including all opportunity costs):

Suppose that a perfectly competitive firm manufactures gizmos with the following cost structure...-1

Suppose that a perfectly competitive firm manufactures gizmos with the following cost structure...-2

a. Calculate the marginal cost schedule for this firm in a table, and then graph the marginal cost curve.

b. If the price of gizmos on the market is $175 each, how many gizmos should the firm produce to maximize profits? What is the level of the firm’s revenues at its chosen output level? How much does it make in profit?

 c. Suppose that more firms start producing gizmos, and the market price drops to $125. How many gizmos should this firm now produce to maximize profits? (Note: In the case of discrete quantities such as these, interpret the P = MC rule as “produce as long as price is at least as great as marginal cost.â€Â) What is this firm’s new revenue level? How much does it make in profits?

d. When the price is $125, will more firms want to enter the market? Will existing firms want to exit?

 
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Suppose that a seller in a duopoly needs to decide whether to spend a lot or a little on advertising. Assume that the consumers are already reasonably well informed about the product, so the purpose of a lot of advertising is to draw customers away from the rival. How could the payoffs from this situation resemble those in Figure 17.6? Draw a payoff matrix illustrating this case (with options “spend a lot†or “spend a little†and outcomes of low, moderate, or high profits) and describe the noncooperative solution. What if the government decided to ban advertising in this industry (as it has, in the past, banned advertising of cigarettes and alcohol in various media)? Would that help or hurt the companies’ profits?

Suppose that a seller in a duopoly needs to decide whether to spend a lot or a little on...

 
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When Braeburn Publishing priced its poetry book at $5, it sold 5 books, and when it priced the volume at $8, it sold 4 books. You can calculate that its revenues were higher with the higher price. Suppose that, from further test marketing, this firm determines that it faces the demand curve described by the following schedule.

When Braeburn Publishing priced its poetry book at $5, it sold 5 books, and when it priced the...

a. Graph the demand curve for the poetry book, labeling carefully. (Compare your graph to Figure 5.1.)

b. Calculate total revenue and marginal revenue at each output level, and add a marginal revenue curve to your graph.

c. Can the $8 price be Braeburn’s profit-maximizing choice? Why or why not?

d. Suppose that, thanks to computerized, on-demand publishing technology, Braeburn can produce any number of books at a constant cost of $5 each. (That is, average cost and marginal cost are both $5 for any quantity of books, and total costs are simply the number of books times $5.) Add a marginal cost curve to your graph. (It will not look like the “usual†MC curveâ€â€it will be horizontal.)

e. What are Braeburn’s profit-maximizing price and output levels for the poetry book? State these, and label them on the graph.

f. What level of profit would Braeburn earn with the $8 price? (Recall that profits equal total revenue minus total cost.) What is the level of profit with the price you just found that maximizes profit?

 
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