Question

during first semester the ratio of students in art class to the number of students in gym class was 2:7. However the art classes were small. In the second semester the ratio of the number of students in art class to the number of students in gym class was 5:4. IF 75 students were in art class second semester how many were in art class and gym class first semester

Answer 1

First semester: 2:7

Second semester: 5:4

5*15 = 75
15*4 = 60

75:60 (art class - gym class)

2:7

2*15 = 30
7*15 = 105

There were 30 students in art class and 105 students in gym class second semester.