The ratio of the girls to the boys in Mr. Johnson's class is 3 to 4. There are 12 boys in the class. What is the total number of students in Mr. Johnson's class?
We are given that the ratio of girls to boys is 3:4 and that there are 12 boys. We need to determine the number of girls in the class. We do that knowing that the ratio must stay constant, therefore, we have the following relationship:
