Microeconomics
Microeconomics
11th Edition
ISBN: 9781260507041
Author: Colander, David
Publisher: MCGRAW-HILL HIGHER EDUCATION
Question
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Chapter 15, Problem 1IP

(a)

To determine

Illustration of firm’s MR and MC and the possibility of equilibria.

(b)

To determine

The two equilibria at which firms will arrive at.

(c)

To determine

The effect of decreasing MC in product price.

(d)

To determine

The effect of increasing MC in product price.

(e)

To determine

Relevance of the kinked demand model.

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A friend has just started up her own business. Her firm asks you how much to charge for her product to maximize profits. The demand schedule for it is given by the first two columns in the table below; its total costs are given in the third column. For each level of output, you can calculate total revenue, marginal revenue, average cost, and marginal cost. The profit-maximizing level of output can be found at the point where TR - TC is greatest, or where MR = MC, (or the last quantity where MR is still greater than MC.) What is the profit-maximizing level of output for her product? 40 How much will she earn in profits? 80 Price     Quantity     TC                 TR?           MR?      MC? $25.00        0             $130  $24.00      10             $275 $23.00     20             $435 $22.50     30             $610 $22.00     40             $800 $21.60      50          $1,005 $21.20      60          $1,225
Suppose that Tommy Hilfiger's marginal cost of a jacket is a constant $100 and at one of the firm's shops, total fixed cost is $2,000 a day. The profit-maximizing number of jackets sold in this shop is 20 a day. When the shops nearby start to advertise their jackets, this Tommy Hilfiger shop spends $2,000 a day advertising its jackets, and its profit-maximizing number of jackets sold jumps to 50 a day. What happens to Tommy's markup and its economic profit? Why? Tommy's markup A. rises, falls, or remains unchanged depending on the effect of advertising on demand OB. falls because advertising decreases demand OC. rises because advertising increases demand OD. does not change because advertising is generally ineffective Search In the short run, Tommy's economic profit ** A. is unknown, zero OB. decreases with advertising, zero OC. increases with advertising, positive OD. is unknown, positive In the long-run, Tommy's economic profit is Next
The figure below shows the demand (D, MR) and cost (MC, ATC) curves for the Hand Made Shirt Shop operating in the monopolistically competitive personalized sweatshirts industry. Price per unit Number of personalized sweatshirts MC 18 0 MR D 50 70 75 Units of output ATC According to the figure above, what is the minimum fixed cost consistent with the firm choosing to remain open in the short run? a. $1,150 b. The firm would continue to operate regardless of the level of fixed costs. c. $1,250 d. $100
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