The following is a statement regarding externalities. The following numbers indicate the benefits/costs of running air conditioners in the city. Q is the temperature reduction enjoyed by the consumer of the air conditioning.

MPB=MSB=30-Q

MPC=10

External cost=5

1. Graph the private/social marginal benefit/cost curves described above
2. Determine market equilibrium consumption of Q
3. Determine the socially optimal consumption level of Q
4. Calculate the consumer/producer surplus in each, if applicable. Calculate the Deadweight loss in each, if applicable.
5. What is going on with producer surplus?
6. Determine the tax that will yield the social optimal consumption level. What is the revenue generated by the tax?