An airline offers summer flights from toronto to london for groups of students. a minimum of 80 students must sign up for each flight, at a round-trip fare of $2400 per person. however, the airline will reduce the fare by $10 for each additional student who joins the flight. what number of passengers will give the airline the greatest revenue?

An airline offers summer flights from toronto to london for groups of students. a minimum of 80 students must sign up for each flight, at a round-trip fare of $2400 per person. however, the airline will reduce the fare by $10 for each additional student who joins the flight. what number of passengers will give the airline the greatest revenue?