Suppose that demand for a product is Q = 1000 – P and supply is Q = 9P. Furthermore, suppose that the marginal external damage of this product is $20 per unit. Suppose this is a negative production externality.
Calculate the Q currently being produced in the private market.
Calculate the Q that is socially optimal.
Is the market currently over- or under producing this good? By how much?
Calculate the deadweight loss associated with the externality.