Question

Ethiopian airlines offers around trip discount on group flight from adis Ababa to lalibela.if x people sing up for the cost of each ticket is to be 1000-2x Birr find the number of people the airline gets maximum number of revenue from the sales of tickets for the flight

Answer 1

revenue is price * quantity, so

r(x) = x(1000-2x)
The vertex (maximum revenue) is midway between the roots, at x = 250