Suppose two consumers, A and B, each have an individual demand for a pure public good.The demands are given by: Q^A = 60 - 2P and Q^B = 30 - P.At the socially optimal level of provision, what are the equilibrium Lindahl prices to consumer A and consumer B?

Q^A = 60 - 2P 2P = 60 - Q

Q^B = 30 - P P= 30 - Q

P = 30- Q/2

Q^A= 60/2 - Q^a/2

Q^A = 30-10 = 20

Q^B = 30 - Q

Q^B = 30 - 20 = 10