Answer:
a. The equilibrium price is $19 and the equilibrium quantity is 55 units.
b. The quantity will be 50 units at $20 price.
Explanation:
Given the demand function, Qa= 150 - 5P
The supply function, Qs = 17 + 2P
At the equilibrium point, the demand is equal to supply.
Demand = Supply
Qa = Qs
150 – 5P = 17 + 2P
150 – 17 = 2P+5P
133 = 7P
P = 19
Now insert P = 19 in Qa= 150 - 5P
Qa= 150 – 5(19)
Qa = 55
The equilibrium price is $19 and the equilibrium quantity is 55 units.
b. If the price is $20 then the quantity will be:
Qa= 150 - 5P
Qa= 150 – 5(20)
Qa = 50 units
The quantity will be 50 units at $20 price.
