A train can accommodate at most 80 passengers, economy class (x) and first- class (y) passengers. To avoid making a loss the train must carry at least ten
economy class passengers and at least twenty first class passengers. Due to the
number of complementary items the first-class passengers receive, the number
of first-class passengers should be at most three times the number of economy
class passengers.
First class tickets cost N$5000 while economy class tickets cost N$3000.
i)
ii)
State/ describe what the variables x and y represent.
State the objective function.
List the constraints.​