Myeconlab With Pearson Etext -- Access Card -- For Microeconomics
9th Edition
ISBN: 9780134143071
Author: PINDYCK, Robert, Rubinfeld, Daniel
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 8, Problem 10E
(a)
To determine
The
(b)
To determine
Identify the effect of entry and exit of the firms in the long run on the
(c)
To determine
Level of output that sells at the lowest price level.
(d)
To determine
Identify the lowest price level in the short run.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Suppose you are given the following information about a particular industry:
QD = 6500 – 100P Market Demand
QS = 1200P Market Supply
TC(q) = 722 + q2/200 Individual firm’s total cost function
MC(q) = q/100 Individual firm’s marginal cost function
Assume that all firms are identical and that the market is characterized by perfect competition.
Find an individual firm’s supply curve.
How many firms are there currently in the market?
Find the equilibrium price and equilibrium market quantity.
How much is output supplied by each firm, and how much profit does each firm make in the short run?
Would you expect to see entry into or exit from the industry in the long run? Explain.
What effect will entry or exit have on the market equilibrium? Find the long-run equilibrium price, the number of firms, and the amount of output each firm produces in the long run.
Suppose you are given the following information about a particular industry
Q(d) = 6500 - 100P Market Demand
Q(s) = 1200P Market Supply
C(q) = 722 + q^2/200 Firm total cost function
MC(q) = 2q/200 Firm marginal cost function
Assume that all firms in this industry are identical and that the market is characterized as perfect competition.
Find the equilibrium price, the equilibrium quantity, the output supplied by the firm, and the profit of each firm.
Would you expect to see entry into or exit from the industry in the long run? What effect would this entry or exit have on market equilibrium?
What is the lowest price at which each firm would stay and sell its output in the long run? Is profit positive, negative or zero at this price?
What is the lowest price at which each firm would sell its output in the short run? Is profit positive, negative, or zero at this price?
Consider a competitive industry with a market demand curve of P = 120 - Q, where P is market price and Q
is the quantity demanded in the market. In the short run there are 4 firms in the industry, and each firm has
a total cost function of TC = 144 + q^2, where q is output of the individual firm. The short-run industry
supply curve Qs is?
Chapter 8 Solutions
Myeconlab With Pearson Etext -- Access Card -- For Microeconomics
Ch. 8 - Prob. 1RQCh. 8 - Prob. 2RQCh. 8 - Prob. 3RQCh. 8 - Prob. 4RQCh. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 1ECh. 8 - Prob. 2ECh. 8 - Prob. 3ECh. 8 - Suppose you are the manager of a watchmaking firm...Ch. 8 - Prob. 5ECh. 8 - Prob. 6ECh. 8 - Prob. 7ECh. 8 - Prob. 8ECh. 8 - Prob. 9ECh. 8 - Prob. 10ECh. 8 - Prob. 11ECh. 8 - Prob. 12ECh. 8 - Prob. 13ECh. 8 - A sales tax of 1 per unit of output is placed on a...Ch. 8 - Prob. 15E
Knowledge Booster
Similar questions
- A competitive industry consists of 100 identical firms. The short run cost function of each firm is given by C(q)=200q+15q^2 What is the market supply function?arrow_forwardCan you help with parts d,e and f please? A perfectly competitive firm has the following total cost function: TC = 4,500 + 2q + .0005q2 where TC is total cost in dollars and q is the quantity of output produced. a. Assume this perfectly competitive market consists of 800 firms with cost structures identical to the one above. What is the equation for the market supply curve? Assume the market demand curve is: Qd = 5,600,000 – 400,000P where Qd is the quantity demanded in the market and P is the commodity’s price in dollars. b. What is the market’s equilibrium price? c. Assuming the market is in equilibrium, using marginal revenue and marginal cost determine the firm’s profit-maximizing quantity of output? What does the profit-maximizing firm’s total economic profit equal? Assume the total cost function above: TC = 4,500 + 2q + .0005q2 is associated with the short-run total cost function that corresponds to the minimum point on the long-run average total cost curve and this is a…arrow_forwardA competitive industry consists of 100 identical firms. The short run cost function of each firm is given by C(q)=200q+15q^2 What is the supply function for each firm?arrow_forward
- Industry X has a market demand curve given by the equation P = 100 – Q/100, where P is the market price, and Q is industry-wide output.100 perfectly competitive firms currently operate in industry X. Each of these firms has a total cost function given by TC = 100 + 10q + q2, where q is the output of the individual firm, and thus MC = 10 + 2q. (a) Would any of the firms in industry X ever shut down in the short run? If so, what is the cut-off price required for firms to operate – Shut-down price? (b) What is the market output in the short run? What is the market price? How much do individual firms produce? Do firms earn economic profits? [Hint: you will first need to work out the industry supply curve.] *Note: when finding answers for this question online, they wrote to first find the AVC function for part a but I don't understand how they found that AVC function first- any help would be much appreciated!arrow_forwardConsider a firm's profit function, II(x) = R(2) -C(2), where R(x) is total revenue as a function of output (2), and C(x) is total cost as a function of output (a) Under perfect competition, each firm is a price taker. Assuming a competitive market price, p* = 10 and a cost function, C(x) = (x – 5), express the firm's profit as a function of x. (b) Find the competitive firm's profit maximizing level of output, r* (Hint: maximize the firm's profit by taking the first derivative of the profit function, setting it equal to zero, and solving for the level of output, r*). (c) If the firm were only interested in minimizing costs, what level of output would it choose?arrow_forwardIf each of 100 firms in a competitive industry has the following Marginal Cost function (i.e., firm supply function), P = 10 +100Qi What is the short-run industry supply function? (where lowercase subscript "i" is for the firm and uppercase "I" is for the Industry)arrow_forward
- Consider a homogeneous goods industry where two firms operate and the linear demand is given by p(y1 + y2 ) = a - b(y1 + y2 ), where p is the market price, and y1 (y2) is the output produced by firm 1 (2). There are no costs for firm 1 or firm 2 C. Suppose the inverse demand curve in a market is D(p) =a-bp, where D(p) is the quantity demanded and p is the market price. Firm 1 is the leader and has a cost function c1(y1)=cy1 while firm 2 is the follower with a cost function c2(y2 )=. Firm 1 sets its price to maximise its profit. Firm 1 correctly forecasts that the follower takes the price leader’s chosen price as given (price taker) and chooses output so as to maximise its own profit. Write down the profit function of the follower. Calculate the profit maximising quantity that the follower selects given the leader’s chosen price p (i.e., calculate the follower’s supply curve S(p)). Interpret the solution to the profit maximising problem. D. The leader is facing the residual…arrow_forwardSuppose a firm operating in a perfectly competitive industry has costs in the short run given by: SRTC = 8 + ½q^2 and therefore MC = q. Assuming that the firm is a price-taker operating in a competitive market, derive an expression for the firm’s supply curve, (the profit maximizing output for the firm as a function of the market price, i.e., q^s = f(p). Assuming the firm is one of 100 identical firms in the industry, what is the short-run supply curve for the industry, i.e., Q^s = f(p)? If demand is given by Q^D = 1000 – 100p, what are the short-run equilibrium price, market quantity, and firm quantity? Is this a long-run equilibrium? [Hint: Calculate firm profit in the equilibrium.]arrow_forward. Suppose a firm operating in a perfectly competitive industry has costs in the short run given by: SRTC = 8 + ½q2 and therefore MC = q. Assuming that the firm is a price-taker operating in a competitive market, derive an expression for the firm’s supply curve, (the profit maximizing output for the firm as a function of the market price, i.e., q S = f(p). Assuming the firm is one of 100 identical firms in the industry, what is the short-run supply curve for the industry, i.e., Q S = f(p)? If demand is given by Q D = 1000 – 100p, what are the short-run equilibrium price, market quantity, and firm quantity? Is this a long-run equilibrium? [Hint: Calculate firm profit in the equilibrium.]arrow_forward
- Suppose that many small firms operating in the perfectly competitive market set-up. All firms are identical and have the total cost function c (q)= 40+8q+(q^2/10), where q is the individual firm’s production amount. The market inverse demand function is described as P= A - (Q/50), where A>0 is constant, and Q is the market quantity. In the short-run equilibrium, there are 78 firms in the market, and firm’s maximum profit is $22.5 a) find the short-run equilibrium price b) suppose that in the long-run, firms cost function is still the same C (q)= 40+8q+(q^2/10) (assume LR cost function has fixed component of 40) Find the long-run equilibrium number of firms? (Assume market demand in LR = market demand SR)arrow_forwardUnder conditions of perfect or pure competition, or close to those conditions, producers (firms) are what are called “price takers”. This means that the price for the product that they are selling is determined by the market. No matter how little or how much product they supply, they can sell all they want at that price. If they were to price their product higher, they will sell zero. Which of the following is true? The price is equal to marginal revenue but not average revenue The price is equal to marginal revenue and average revenue The price is equal to average revenue but is not equal to marginal revenue The price is above both marginal revenue and average revenuearrow_forwardIf a perfectly competitive firm is producing at the output level where marginal revenue is equal to marginal cost and at this output level, the market price is less than the firm's average total cost, the firm is ________. Group of answer choices not producing at the profit-maximizing output level incurring an economic loss earning a competitive return earning economic profitsarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Economics (MindTap Course List)EconomicsISBN:9781337617383Author:Roger A. ArnoldPublisher:Cengage Learning
Economics (MindTap Course List)
Economics
ISBN:9781337617383
Author:Roger A. Arnold
Publisher:Cengage Learning