There is a total of 15 students in the park. Twelve of the students are riding their bikes. What is the ratio of students riding bikes to those who are not riding bikes? *
A. 4:1
B. 3:5
C. 4:5
D. 5:4
Which one is right?
PLS HELP ME
If you take the people riding bikes (12) to people not riding bikes (3), this would be 12:3 so you can divide both of them by 3. That leaves you with 4:1.