Final answer:
To find a class with the same proportion of boys to girls as Coach Abernathy's class, compare the ratio of boys to total students in his class to the ratios in other classes and look for a class with the same simplified fraction.
Step-by-step explanation:
To determine which class has the same proportion of boys to girls as Coach Abernathy's class, we need to find the ratio of boys to total students in his class. Coach Abernathy has 12 boys out of 30 total students, so the ratio is 12/30.
Now, we can compare this ratio to the ratios in the other classes. For example, if a class has 20 boys and 50 total students, the ratio would be 20/50.
We need to find a class with the same ratio as Coach Abernathy's class, so we can look for a class with the same fraction when simplified. In this case, 12/30 can be simplified to 2/5. So any class with a ratio of 2 boys to 5 total students would have the same proportion of boys to girls as Coach Abernathy's class.