To find out which class has the greater ratio of students who wear glasses to the total number of students, we need to calculate the ratios for both Janet's and Kate's classes.
For Janet's class:
- Number of students wearing glasses: 15
- Total number of students: 25
- Ratio = 15/25 = 0.6
For Kate's class:
- Number of students wearing glasses: 12
- Total number of students: 20
- Ratio = 12/20 = 0.6
Now, we can compare the two ratios:
- Janet's class ratio = 0.6
- Kate's class ratio = 0.6
Since both ratios are equal, we conclude that neither class has a greater ratio.
Thus, the answer is: C. Neither. The classes have the same ratio.