A night-club owner has both graduate student and professor customers. The demand for drinks by a typical graduate student is Q_S=18-2P. The demand for drinks by a typical professor is Q_A=12-P. There are equal numbers of each. The marginal cost of each drink is $2. Assume no fixed costs.

What will profit be if the owner can only charge one price (assume this is the profit if there is just one of each group)?

32

36

60

48