Respuesta :
the equation would be
80=4s=5e
s is students, student tickets cost 4$ and e is nonstudents and there tickets cost 5$ and 80$ is how much they got so s would multiply 4 to get the amount they got from in school students and e times 5 to get out of school people then they would add for an all out amount of 80$ which is what the school received