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Managerial Economics Homework 1 Assignment

Question # 00031014
Subject: Economics
Due on: 11/08/2014
Posted On: 11/07/2014 11:13 PM

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1. If the demand curve for wheat in the United States is P=12.4 - Q_D where is the P is the
farm price of wheat (in dollars per bushel) and Q_D is the quantity of wheat demanded
(in billions of bushels), and the supply curve for wheat in the United States is P= -2.6 +
2Q_S where Q_s is the quantity of wheat supplied (in billions of bushels), what is the
equilibrium price of wheat? What is the equilibrium quantity of wheat sold? Must the
actual price equal the equilibrium price? Why or why not?

2. The Haas Corporations executive vice president circulates a memo to the firms top
management in which he argues for a reduction in the price of the firms product. He
says such a price cut will increase the firms sales and profits.
a. The firms marketing manager responds with a memo pointing out that the price
elasticity of demand for the firms product is about -0.5. What is this fact
relevant?
b. The firms president concurs with the opinion of the executive vice president. Is
she correct?
3. In the following diagram, we show one of Janes indifference curves and her budget line.
a. If the price of good X is $100, what is her income?
b. What is the equation for her budget line?
c. What is the slope of her budget line?
d. What is the price of good Y?
e. What is Janes marginal rate of substation in equilibrium?
Good X
40

1

80
Good Y

4. According to the chief engineer at the Zodiac Company, Q=AL^aK^B, where Q is the
output rate, L is the rate of labor input, and K is the rate of capital input. Statistical
analysis indicates that a=0.8 and B=0.3. The firms owner claims the plant has increasing
returns to scale.
a. Is the owner correct?
b. If B were 0.2 rather than 0.3 would she be correct?
c. Does output per unit of labor depend only on a and B? Why or why not?

5. The Haverford Company is considering three types of plants to make a particular
electronic device. Plant A is much more highly automated than plant B, which in turn is
more highly automated than plant C. For each type of plant average variable cost so long
as output is less than capacity, which is the maximum output of the plant. The cost
structure for each type of plant is as follows:
Average Variable Costs
Plant A
Plant B
Plant C
Labor
$1.10
2.40
$3.70
Materials
0.90
1.20
1.80
Other
0.50
2.40
2.00
Total
$2.50
$6.00
$7.50
Total fixed costs
$300,000
$75,000
$25,000
Annual capacity
200,000
100,000
50,000
a. Derive the average costs of producing 100,000, 200,000, 300,000, and
400,000 devices per year with plant A. (For output exceeding the capacity of
a single plant, assume that more than one plant of this type is built.)
b. Derive the average costs of producing 100,000, 200,000, 300,000, and
400,000 devices per year with plant B.
c. Derive the average costs of producing 100,000, 200,000, 300,000 and 400,000
devices per year with plant C.
d. Using the results of parts (a) through (c), plot the points on the long-run
average cost curve for the production of these electronic devices for outputs of
100,000, 200,000, 300,000 and 400,000 devices per year.
6. In 2008, the box industry was perfectly competitive. The lowest point on the long-run
average cost curve of each of the identical box producers was $4, and this minimum point
occurred at an output of 1,000 boxes per month. The market demand curve for boxes was
Q_D=140,000 10,000P
Where P was the price of a box (in dollars per box) and Q_D was the quantity of boxes
demanded per month. The market supply curve for boxes was
Q_S=80,000 + 5,000P
Where Q_S was the quantity of boxes supplied per month.
a. What was the equilibrium price of a box? Is this the long-run equilibrium price?
b. How many firms are in this industry when it is in long-run equilibrium?
7. The Wilson Companys marketing manager has determined that the price elasticity of
demand for its product equals -2.2. According to studies she carried out, the relationship
between the amount spent by the firm on advertising and its sales is as follows:
Advertising Expenditure
Sales
$100,000
$1.0 million
$200,000
$1.3 million
$300,000
$1.5 million
$400,000
$1.6 million
a. If the Wilson Company spends $200,000 on advertising, what is the marginal revenue
from an extra dollar of advertising?
b. Is $200,000 the optimal amount for the firm to spend on advertising?
c. If $200,000 is not the optimal amount, would you recommend that the firm spends more
or less on advertising?

8. Ann McCutcheon is hired as a consultant to a firm producing ball bearings. This firm
sells in two distinct markets, each of which is completely sealed off from the other. The
demand curve for the firms output in the first market is P_1=160-8Q_1, where P_1 is the
price of the product and Q_1 is the amount sold in the first market. The demand curve
for the firms output in the second market is P_2=80-2Q_2, where P_2 is the price of the
product and Q_2 is the amount sold in the second market. The firms marginal cost curve
is 5+Q where Q is the firms entire output (destined for either market). Managers ask
Ann McCutcheon to suggest a pricing policy.
a. How many units of output should she tell managers to sell in the second market?
b. How many units of output should she tell managers to sell in the first market?
c. What price should managers charge in each market?
9. . The Xerxes Company is composed of a marketing division and a production division.
The marketing division packages and distributes a plastic item made by the production
division is
P_0=200-3Q_0
Where P_0 is the price (in dollars per pound) of the finished product and Q_0 is the quantity sold
(in thousands of pounds). Excluding the production cost of the basic plastic item, marketing
divisions total cost function is
TC_0=100+15Q_0
Where TC_0 is the marketing divisions total cost (in thousands of dollars). The production
divisions total cost function is
TC_1=5+3Q_1 + 0.4Q_1^2
Where TC_1 is total production cost (in thousands of dollars) and Q_1 is the total quantity
produced of the basic plastic item (in thousands of pounds). There is a perfectly competitive
market for the basic plastic item, the price being $20 per pound
a. What is the optimal output for the production division?
b. What is the optimal output for the marketing division?
c. What is the optimal transfer price for the basic plastic item?
d. At what price should the marketing division sell its product?
10. James Pizzo is president of a firm that is the industry price leader; that is, it sets the price
and the other firms sell all they want at that price. In other words, the other firms act as
perfect competitors. The demand curve for this industrys product is P=300-Q, where P is
the price of the product and Q is the total quantity demanded. The total amount supplied
by other firms is equal to Q_r, where Q_r = 49P. (P is measured in dollars per barrel; Q,
Q_r and Q_b are measured in millions of barrels per week.)
a. If Pizzos firms marginal cost curve is 2.96Q_b, where Q_b is the output of his
firm, at what output level should he operate to maximize profit?
b. What price should he charge?
c. How much does the industry as a whole produce at this price?
d. Is Pizzos firm the dominant firm in the industry?

11. The Boca Raton Company announces that if it reduces its price subsequent to a purchase,
the early customer will get a rebate so that he or she will pay no more than those buying
after the price reduction.
a. If the Boca Raton Company has only one rival, and if its rival too makes such an
announcement, does this change the payoff matrix? If so, in what way?
b. Do such announcements tend to discourage price cutting? Why or why not?
12. Your company is bidding for a broadband spectrum license. You have been asked to
submit an optimal bidding strategy. You expect that bidders will have independent
private values for the licenses because each bidder presently has a different structure in
place. You elieve the valuations for these licenses will be $200 million and $700 million.
Your own valuation is $650 million. There is some uncertainty about the auction design
that will be used, so you must suggest an optimal bidding strategy for the following
acution designs:
a. Second-price, sealed-bid auction
b. English auction.
c. Dutch auction
13. William J. Bryan is the general manager of an electrical equipment plant. He must decide
whether to install a number of assembly robots in his plant. This investment would be
risky because both management and the workforce have no real experience with the
introduction or operation of such robots. His indifference curve between expected rate of
return and risk is as hsown in the figure.
a. If the riskiness () of this investment equals 3, what risk premium does require?
b. What is the riskless rate of return
c. What is the risk-adjusted discount rate?
d. In calculating the present value of future profit from this investment, what interest
rate should be used?
Expected
Rate of
Return
(percent)
18----------------------------------------------------12
6
0

1

2

3

Risk ()

14. Suppose the typical Florida resident has wealth of $500,000, of which his or her home is
worth $100,000. Unfortunately Florida is infamous for its hurricanes, and it is believed
there is a 10 percent chance of hurricane that could totally destroy a house (a loss of
$100,000). However, it is possible to retrofit the house with various protective devices
(shutters, roof bolts, and do on) for a cost of $2,000. This reduces the 10 percent chance
of a loss of $100,000 to a 5 percent chance of a loss of $50,000. The homeowner must
decide whether to retrofit and thereby reduce the expected loss. The problem for an
insurance company is that it does not know whether the retrofit will be installed and
therefore cannot quote a premium conditioned on the policyholder choosing this action.
Nevertheless, the insurance company offers the following two policies from which the
homeowner can choose: (1) The premium for insurance covering total loss is $12,000 or
(2) the premium for insurance covering only 50 percent of loss is $1,500. The typical
homeowner has a utility function equal to the square root of wealth. Will the homeowner
retrofit the house, and which insurance policy will homeowner buy? Will the insurance
company make a profit (on average) given the homeowners choice?
15. The market for digital cameras is relatively new. Ajax Inc. produces what it regards as a
high-quality digital camera. Knockoff Inc. produces what it regards as a low-quality
digital camera. However, because the market is so new, reputations for quality have not
yet developed, and consumers cannot tell the quality difference between an Ajax digital
and a Knockoff digital just by looking at them.
If consumers knew the difference, theyd be willing to pay $200 for a high-quality
camera, and theyd be willing to pay $100 for a low-quality camera. It costs Ajax $85 to
produce a high-quality camera, and it costs Knockoff $55 to produce a low-quality
camera.
A recent MBA hire at Ajax suggests that Ajax could differentiate its
camera from Knockoffs by offering a full-coverage warranty (which would fully cover
any defect in the camera at no cost to the customer). The MBA estimates that it would
cost Ajax $20 per year to offer such a warranty. The MBA also estimates that it would
cost Knockoff $40 per year should Knockoff attempt to copy Ajaxs warranty strategy.
Consumers will feel that the camera with the longest warranty is high-quality and that
with the shortest warranty is low-quality. The camera companies want to maximize the
profit per camera.
16. The cost of pollution (in billions of dollars) originating in the paper industry is
Cp=2P +P^2
Where P is the quantity of pollutants emitted (in thousands of tons). The cost of pollution
control (in billions of dollars) for this industry is
Cc=5 3)
a. What is the optimal level of pollution?
b. At this level of pollution, what is the marginal cost of pollution?
c. At this level of pollution, what is the marginal cost of pollution control?

Tags aignment homework economics managerial price firms cost plant output curve company market total quantity optimal dollars 0 camera product wheat marketing firm rate marginal ajax industry year 1 knockoff demand does average plastic warranty

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