Assignment No.01 Marks: 20
Question:
Suppose the market demand and market supply for Levis jeans is given by the following equations:
Qd = 5000 – 2.5P
Qs = 4000 + 1.5P
A. Find quantity demanded when price is Rs. 250, Rs. 450 and Rs. 650.
Quantity demand is found by putting the values of P in quantity demand equation.
1. When the price is Rs.250
Qd = 5000 – 2.5P
Qd = 5000 – 2.5(250)
Qd = 4375 units
2. When price is Rs.450
Qd = 5000 – 2.5P
Qd = 5000 – 2.5(450)
Qd = 3875 units
3. When price is Rs.650
Qd = 5000 – 2.5P
Qd = 5000 – 2.5(650)
Qd = 3375 units
B. Find quantity supplied when price is Rs. 200, Rs. 400 and Rs. 600.
Quantity supplied is found by putting the values of P in quantity supplied equation.
1. When the price is Rs.200
Qs = 4000 + 1.5P
Qs = 4000 + 1.5(200)
Qs = 4300 units
2. When price is Rs.400
Qs = 4000 + 1.5P
Qs = 4000 + 1.5(400)
Qs = 4600 units
3. When price is Rs.600
Qs = 4000 + 1.5P
Qs = 4000 + 1.5(600)
Qs = 4900 units
C. Find equilibrium price and equilibrium quantity with the help of above equations.
The equilibrium price for Levis jeans is found by equating Qd and Qs.
At equilibrium, the quantity demand and quantity supply must equal
Qd=Qs
5000 – 2.5P= 4000 + 1.5P
5000-4000=1.5P+2.5P
1000=4P
P=1000/4=250Rs.
Equilibrium price =Rs.250
Equilibrium quantity can found by putting this price in equation of quantity demand or quantity supply
Qs = 4000 + 1.5P
Qs = 4000 + 1.5(250)
Qs = 4375 units
Note:
At equilibrium, at equilibrium, the quantity demand and quantity supply must equal
Qd=Qs
Equilibrium price at 250
5000 – 2.5(250) = 4000 + 1.5(250)
4375 units=4375 units
D. Show the equilibrium condition in Levis jeans market graphically.