QUESTION ONE
[25 MARKS]
The government is planning to introduce a ban on the importation of potatoes between June
2025 and August 2025. The domestic demand function for potatoes is Qd = 250 - 4P, the
= domestic supply function for potatoes
importing potatoes isQ5 = -50 + 3P.
is
Q5
-50 + 3P and the foreign supply function for
Analyse the impact of this government policy on the Namibian economy.
[25 marks]
QUESTION TWO
[25 MARKS]
Martha has the utility function U(x,y) = 0.Sx 2y4, where x denotes the amount of food
consumed and y the amount of clothing. Now suppose that he has an income ofN$450.00 per
week and that the price of clothing is Py = N$10 per unit. Suppose that the price of food is
initially P.d = N$25 per unit and that the price subsequently falls to Px2=N$5 per unit.
Find the numerical values of the income and substitution effects on food consumption and
graph the results. Let unit of food be on the x-axis.
QUESTION THREE ·
[25 MARKS]
A homogeneous products duopoly faces a market demand function given by P = 500 - SQ,
where Q = Ql + 02. Both firms have a constant marginal cost MC= 80.
a) What is Firm i's profit-maximizing quantity, given that Firm 2 produces an output of 60
units per year? What is Firm l's profit-maximizing quantity when Firm 2 produces 30 units
per year?
[5 marks]
b) Derive the equation of each firm's reaction curve and then graph these curves.
[5 marks]
c) What is the Cournot equilibrium quantity per firm and price in this market?
[5 marks]
d) What would the equilibrium price in this market be if it were perfectly competitive?
[5 marks]
e) What would the equilibrium price in this market be if the two firms colluded to set the
monopoly price?
[5 marks]
Question Four
[25 marks]
John has the utility function U(x, y) = 2xy, where x denotes the amount of beer consumed and
y the amount of wine. Now suppose that he has an income of $72 per week and that the price
of wine is Py = N$1 per unit. Suppose that the price of beer is initially Px1 = N$9 per unit and
that the price subsequently falls to Px2 =N$4 per unit. Let good x be on the x-axis. Is good x a
normal, inferior or giffen good?
All the best