All of the following are equivalent except . 7.5:4.5
5 is to 3
15/5
45/27

Which of the following is not a proportion?
1/4=3/12
8/6=20/15
2/4=3/6
4/10=12/20

On a field trip, there are 12 adults and 14 students.

What is the ratio of the number of adults to the total number of people on the field trip?

6 to 7
26 to 12
12 to 14
6 to 13

In a group of students, the ratio of girls to boys is 3 to 2.

If there are 15 girls, how many total students are there?

20
25
10
30