1. Are the following statements true, false? Please give an explanation.

(a) A monopolist producing at a price and quantity where the elasticity of demand is −0.5 is not maximizing profits.

(b) Since monopolies raise prices above the efficient level, the government should always break up the monopolistic firms or foster entry into the market.

(c) Unlike in a perfectly competitive market, imposing a price ceiling on a monopolist may increase output.

2. A monopoly faces market demand Q = 30 − P and has a cost function

C(q) =

 

 (a) Find the profit maximizing price and quantity and the

resulting profit to the monopoly.

 

(b) Find the price elasticity of the demand Edp at the price

and quantity found in (a).

 

(c) What is the equilibrium price?

 

(d) Assume that the government puts a price ceiling on

the monopolist at P = 18. How much output will the monopolist

produce? What will be the profit of the monopolist?

 

(e) Assume that the government put a price ceiling on the

monopolist in order to maximize the total (i.e. consumer plus

producer) surplus. What price ceiling should it choose? How

much output will the monopolist produce at this price ceiling?

(f) Now assume that in addition to the $130 fee, the government puts

on the monopolist the same price ceiling as in part (e). Will the

monopolist choose to produce in this case?

(g) Suppose the government decides to impose a tax of

$3 per unit on the monopolist. Find the resulting output, price,

government revenue and monopolist’s profit. Show on a diagram

the consumer surplus, the producer surplus, government revenue

and deadweight loss.

(h) Assume the monopolist acquired a second factory with a

cost function C2(q) = 6q, but it still could use the first factory with

the cost function C1(q) =

 

Find the new profit maximizing price and calculate the amount of output produced in each of the

two factories.


 

 

3. Suppose that North Pole Enterprises makes ice sculptors in the North Pole and ships them to the United States, where they are sold in the perfectly-competitive ice sculpture market for a fixed price of 100 dollars.

The primary input in North Pole Enterprises production is ice.

Unfortunately, NPE doesn’t own any rich ice-producing land in the North Pole, and hence must purchase ice from one of the many firms that produce ice. The market for ice is perfectly competitive, with a

supply curve given by

S(r) = r,

where r is the price of ice. Since NPE is the only demander of ice

produced in the North Pole, it acts as a monopsonist.

Its production function for sculptures is given by:

F(x) =

Where x is the amount of ice it uses.

(a)  How much ice does NPE use?

 

(b)  What is the price of ice?

  • 11 years ago