South Charleroi Airport is a regional airport serving the leisure travel market. The inverse demand curve for this airport is P = 150 – Q. Assume that there are only two airlines serving this airport, each with the identical marginal cost (MC) of $30.

a. Supposing they perform as Cournot oligopolists, determine the price and total firm productivity.

b. Compare this with the result under pure monopoly and perfect competition.