Answer:
Domestic demand: Q = 5,000 – 100P; Supply: Q = 150P
At equilibrium, demand equals supply.
5,000 – 100P = 150P
250P = 5,000
P = 5,000/250
Equilibrium price (P) = $20
Substituting P in demand equation:
Q = 5,000 – (100*20)
Equilibrium quantity (Q) = 3,000 portable radio would be imported