The industry for cobalt mining is perfectly competitive. A typical mine has a capacity constraint of 200 tons (i.e., it cannot produce more than 200 tons) and a constant marginal cost of 400. All of the fixed cost is sunk. Currently there are 60 identical mines in the industry. The current market demand for cobalt is D(p) = 20,000 - 10p. (a) Find the supply curve of a representative mine. Draw the supply curve using Excel. (b) Find the short-run equilibrium price and quantity of cobalt.

The industry for cobalt mining is perfectly competitive. A typical mine has a capacity constraint of 200 tons (i.e., it cannot produce more than 200 tons) and a constant marginal cost of 400. All of the fixed cost is sunk. Currently there are 60 identical mines in the industry. The current market demand for cobalt is D(p) = 20,000 - 10p. (a) Find the supply curve of a representative mine. Draw the supply curve using Excel. (b) Find the short-run equilibrium price and quantity of cobalt.

Microeconomic Theory

12th Edition

ISBN:9781337517942

Author:NICHOLSON

Publisher:NICHOLSON

Chapter19: Externalities And Public Goods

Section: Chapter Questions

Problem 19.1P: A firm in a perfectly competitive industry has patented a newprocess for making widgets. The new...

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A firm in a perfectly competitive industry has patented a newprocess for making widgets. The new process lowers the firm’saverage cost, meaning that this firm alone (although still aprice taker) can earn real economic profits in the long run. a. If the market price is $20 per widget and the firm’s marginalcost is given by MC=0.4q , where q is the dailywidget production for the firm, how many widgets willthe firm produce? b. Suppose a government study has found that the firm’snew process is polluting the air and estimates the socialmarginal cost of widget production by this firm to be. If the market price is still $20, what is thesocially optimal level of production for the firm? Whatshould be the rate of a government-imposed excise tax tobring about this optimal level of production? c. Graph your results.
The table below shows the weekly marginal cost (MC) and average total cost (ATC) for Buddies, a purely competitive firm that produces novelty ear buds. Assume the market for novelty ear buds is a competitive market and that the price of ear buds is $6.00 per pair. Buddies Production Costs Quantity MC АТС of Ear Buds ($) ($) 9.00 - 10 2.00 5.50 15 2.44 4.48 20 3.56 4.25 25 4.50 4.30 30 5.02 4.42 35 5.96 4.64 40 8.56 5.13 Instructions: In part a, enter your answer as the closest given whole number. In parts b-d, round your answers to two decimal places. a. If Buddies wants to maximize profits, how many pairs of ear buds should it produce each week? pairs b. At the profit-maximizing quantity, what is the total cost of producing ear buds? c. If the market price for ear buds is $6 per pair, and Buddies produces the profit-maximizing quantity of ear buds, what will Buddies profit or loss be per week? 2$ d. Now assume the market price is $5.50 per pair, and Buddies produces the…
Question list Question 8 O Question 9 O Question 10 K Sophia grows Christmas trees. Her cost of production is shown in the table below. Christmas Trees Total Cost $40 $60 $108 II $164 $228 6 $300 7 $380 Suppose the market for Christmas trees is perfectly competitive and that the market price for Christmas trees is $60 per tree. How many Christmas trees should Sophia grow? Sophia should grow trees. (Enter your response as an integer value.)
The table below shows the weekly marginal cost (MC) and average total cost (ATC) for Buddies, a purely competitive firm that produces novelty ear buds. Assume the market for novelty ear buds is a competitive market and that the price of ear buds is $6.00 per pair. Buddies Production Costs Quantity MC ATC of Ear Buds ($) ($) 25 2.20 30 2.02 2.17 35 2.45 2.21 40 3.57 2.38 45 4.00 2.56 50 5.46 2.85 55 5.93 3.13 60 8.53 3.58 Instructions: In part a, enter your answer as the closest given whole number. In parts b-d, round your answers to two decimal places. a. If Buddies wants to maximize profits, how many pairs of ear buds should it produce each week? pairs b. At the profit-maximizing quantity, what is the total cost of producing ear buds?
A5 5. Suppose the market is perfectly competitive. The equilibrium market price P = $20. A consumer's willingness to pay (WTP) is WTP = 30 - q. (a) How much this consumer will buy and wh (b) How much a typical firm will produce the firm's marginal cost MC = 2q. If the average total cost is ATC = q, can you tell if this firm is making positive, negative, or zero economic profit (c) It is assumed here that all firms are identical. In what sense are they identica (d) Suppose now that one firm's marginal cost is: MC = 25/q. Can this industry still remain perfectly competitive? Why not?l?s?y?
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Suppose that the market for chicken momos is perfectly competitive with ten firms producing momos. Tasty treat is one of the ten price-takers in the market for momos. The accompanying tables show the demand schedule for momos in Dhaka and cost schedule for "Tasty Treat". DEMAND SCHEDULE Price (BDT per plate) Quantity demanded (plate per hour) 10 900 25 675 30 600 40 450 50 300 70 0 COST SCHEDULE OF TASTY TREAT Output (plate per hour) Marginal Cost (BDT per extra plate) Average Variable Cost (BDT per plate) Average total cost (BDT per plate) 40 20 25 90 50 10 10 75 60 30 20 55 70 50 23 50 80 70 35 60 90 85 50 77 a) What is the value of the shut-down price and break-even price for Tasty Treat?How did you figure that out?b) Write down the individual supply schedule of chicken momos for Tasty Treat and the industry supply schedule for chicken momos.c) Plot the market demand and supply curves for chicken momos and find the equilibrium price and…
The production manager of a clothing manufacturer estimates that the daily total cost of producing men's suits is given by the equation: TC = 2,000+ 396Q + 0.8Q² The market price of suits is $300. Should the firm shut down? Select one: O No O Yes
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Consider the competitive market for steel. Assume that, regardless of how many firms are in the industry, every firm in the industry is identical and faces the marginal cost (MC), average total cost (ATC), and average variable cost (AVC) curves shown on the following graph. V AVC COSTS (Dollars per ton) 100 882 889 80 20 0 MC 5 25 30 35 QUANTITY (Thousands of tons) 15 20 10 45 40 50 The following diagram shows the market demand for steel.
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