A teacher and nineteen students are planning a field trip to go to an aquarium. they need to raise money to go on the trip. the cost of the trip includes:

. food and ticket : thirty-two dollars per person.

. cost of the bus: nine hundred dollars.

One adult need to go on the trip for every five students. the class need to earn three-fourths the total cost of the trip. how much money does the class need to earn?

show all your mathematical thinking