1. There are three groups in a community. Their demand curves for public television in hours of programming, T, are given respectively by

W1 =$150T W2 =$3602T W3 =$5302T.

Suppose public television is a pure public good that can be produced at a constant marginal cost of $450 per hour.

(a) What is the efficient number of hours of public television?

(b) How much public television would a competitive private market provide?

(c) Show the graph of the demand curve.

(d) Give the MSB, PSB and MPB.