The Desjardins airline offers flights to two different categories of consumers: business travelers (category A) and other travelers (category B).

Here is their respective request:

QA=2600.4PA QB=2400.5PB

where QA and QB represent the number of passengers of each category, PA and PB the price of a ticket.

The cost to serve consumers is:

C(Q)=10,000+100Q

where Q=QA+QB. 1-New legislation forces the airline Desjardins to charge a single price to all its customers. What is the total demand? 2-What are the price and quantity that maximize the profits of the monopolist? 3-What is the profit of the monopolist?