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BUSINESS ADMINISTRATION DEPARTMENT HOA LAC ESSAY TEST
SUBJECT: Microeconomics (ECO111) - Essay Duration: 120 minutes STUDENT INFORMATION Name: Roll number: Room No: Class: FOR TEACHER ONLY MARK MARKED BY Signature of Proctor (NAME AND SIGNATURE) Instructions:
Students have 120 minutes for this exam section. Students are not allowed to use any materials.
Simple calculators are allowed. Numerical answers without calculations do not have full credits.
All graphs should have necessary labels. Question 1 (5 points)
Suppose the market demand curve for a monopolist is given as P = 200 – 2Q. Furthermore,
suppose the MC curve for the firm can be written as MC = 20 + 2Q. The firm’s TC can be expressed as
TC = 20Q + Q2 + 100. Use this information to answer this set of questions.
a. What is the profit maximizing price and quantity for this monopolist given the
above information? Calculate the monopolist’s profit.
b. Calculate the monopolist’s consumer surplus (CS), producer surplus (PS), and deadweight loss (DWL).
c. Suppose demand increases by 90 units at every price. Find the equation for the
monopolist’s new demand curve. Then, calculate the new profit maximizing price
and quantity for this monopolist given the new demand curve. Calculate the new level of monopoly profits.
d. Calculate the value of consumer surplus (CS’), producer surplus (PS’), and
deadweight loss (DWL’) for this monopolist given the information in (c).
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Kate’s Katering provides catered meals, and the catered meals industry is perfectly competitive.
Kate’s machinery costs $100 per day and is the only fixed input. Her variable cost consists of the
wages paid to the cooks and the food ingredients. The variable cost per day associated with each
level of output is given in the accompanying table. Q VC ($) 0 0 10 200 20 300 30 480 40 700 50 1,000
a. Calculate the total cost, the average variable cost, the average total cost, and the
marginal cost for each quantity of output.
b. What is the break-even price? What is the shut-down price?
c. Suppose that the price at which Kate can sell catered meals is $21 per meal. In the
short run, will Kate earn a profit? In the short run, should she produce or shut down?
d. Suppose that the price at which Kate can sell catered meals is $17 per meal. In the
short run, will Kate earn a profit? In the short run, should she produce or shut down? Approved by: Checked by: Built by: Name: Nguyễn Thành Tâm Name: Nguyễn Thành Tâm Name: Nguyễn Thành Tâm Date: 01/11/2023 Date:01/11/2023 Date: 01 /11/2023
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