ECO 1104A Assignment 1 – Consider a hypothetical market
Assignment 1
ECO 1104A – Introduction to Microeconomics
Summer 2017,
Note: This assignment carries 15% of the final grade. A total of 100 points are
distributed evenly over all parts of the questions. The assignment is based on the materials covered in Chapter 4 of the textbook, Principles of Economics, 7th Canadian
edition, by Mankiw, Kneebone, and McKenzie.
Question 1
For this question we will consider a hypothetical market for strawberries in Ottawa.
Let us assume that the market for strawberries has the following demand and supply
schedules:
Price
($/lb)
1.99
2.99
3.99
4.99
5.99
6.99
7.99 Quantity Demanded
(thousands of lbs)
150
120
110
90
75
50
25 Quantity Supplied
(thousands of lbs)
0
50
70
90
110
130
150 a) Plot the demand and supply curves in a graph. Make sure that you label the curves
and write what you have put in each axis.
b) What are the equilibrium price and quantity for strawberries? Identify the equilibrium point, equilibrium price and equilibrium quantity as E, Pe , Qe , respectively.
c) What happens to the market at prices $3.99 and $7.99 per pound? Is the market
in equilibrium/excess demand/excess supply? Identify graphically and calculate the
amounts of shortage/surplus in the market at these prices.
d) It’s rumored that a particular fertilizer that is believed to be positively associated
with cancer has been used to grow strawberries. Use the supply and demand dia1 gram for strawberries to illustrate the effect on demand, supply, equilibrium price and
equilibrium quantity for strawberries. Illustrate the adjustment process to the new
equilibrium.
e) A long strike by the farm workers has been blamed for this year’s bad harvest. Use
the supply and demand diagram for strawberries to illustrate the effect on demand,
supply, equilibrium price and equilibrium quantity for strawberries. Illustrate the adjustment process to the new equilibrium.
Question 2
Let us assume that the demand for housing in Ottawa is given by the following equation:
P = 500 ? (1/20)Q.
However, the supply of housing units are fixed at 6000 for this year.
a) Plot the demand and supply curves in a graph. Make sure that you label the curves
and write what you have put in each axis.
b) What are the equilibrium price and quantity for houses in Ottawa? Use both algebra and graph to illustrate your answer.
c) Let us assume that the recent IT sector boom has resulted in an inflow of skilled
IT workers in Ottawa and as a result the demand changes to
P = 1000 ? (1/20)Q.
What are the equilibrium price and quantity for houses in Ottawa? Use both algebra
and graph to illustrate your answer.
d) Now let us assume that the supply is given by the following equation:
Q = 60 + 8P.
What is the new equilibrium price and quantity of housing in Ottawa? Use algebra to
answer this part. 2 e) An increase in consumer income has shifted the demand curve to:
Q = 11760 ? 5P.
The supply curve stays the same as in part d. Find the equilibrium price and quantity.
Use algebra to answer this part. 3
