Question

There are three grades in Kyle's middle school-sixth, seventh, and eighth. One-third of the students are in sixth grade and one-fourth are in seventh grade. What fraction of the school's students are in eighth grade?

Answer 1

Answer: 5/12 of the school's students are in eighth grade.

Explanation:

The three grades in Kyle's middle school are sixth, seventh, and eighth.

One-third of the students are in sixth grade and one-fourth are in seventh grade. This means that the total number of students in sixth grade and seventh grade would be

1/3 + 1/4 = (4 + 3)/12 = 7/12

Therefore, the fraction of the school's students that are in eighth grade would be

1 - 7/12 = 5/12