Suppose that a monopolist was going to try a two-part tariff. An individual consumer has a demand

for the monopolist's product is given by: QD=20-2P. The marginal cost is a constant $2 per unit.

23. Determine the fixed fee charged by the monopolist. _______________$64

24. Suppose through immigration, a new kind of consumer arrives in town with a demand given

QD = 14 2

All info is given.