Final answer:
The arts academy has 15 students per teacher and 9 students per tutor.
Step-by-step explanation:
To find the number of students per teacher, divide the total number of students by the number of teachers. In this case, the academy aims to have 5 teachers for every 75 students, so the number of students per teacher is 75/5 = 15 students per teacher.
To find the number of students per tutor, divide the total number of students by the number of tutors. In this case, the academy aims to have 4 tutors for every 36 students, so the number of students per tutor is 36/4 = 9 students per tutor.