In a class of 800, one-eighth graduated with an A average, half got a B, and the rest had a C average. How many had a C average?

To determine how many students had a C average, we start by breaking down the number of students in each category based on the given information.

First, we calculate how many students graduated with an A average. Since one-eighth of the class graduated with this average, we divide the total number of students (800) by 8:

[

800 \div 8 = 100

]

So, 100 students graduated with an A average.

Next, we look at the number of students that graduated with a B average. Half of the class received a B, so we multiply the total number of students (800) by 1/2:

[

800 \times \frac{1}{2} = 400

]

Thus, 400 students graduated with a B average.

Now, we can find out how many students had a C average by starting with the total number of students and subtracting the number of students who graduated with A and B averages:

[

800 - (100 + 400) = 800 - 500 = 300

]

This calculation reveals that 300 students graduated with a C average. Therefore, the correct answer reflects the total number of students achieving a C average, which is