There are 90 kids that attend Harlem High School. If 40 are in Mrs. Fetter's class, and 20 are in Mrs. Cassy's class, what percent make up the last classroom?
30/90 = 1/3 = 33.3%
To find the percentage of students in the last classroom, we need to know how many students are in that classroom. The question states that there are a total of 90 kids attending Harlem High School, and we have already accounted for 40 students in Mrs. Fetter's class and 20 students in Mrs. Cassy's class.
To find the number of students in the last classroom, we subtract the number of students in Mrs. Fetter's and Mrs. Cassy's classes from the total number of students.
Total number of students = 90
Number of students in Mrs. Fetter's class = 40
Number of students in Mrs. Cassy's class = 20
Number of students in the last classroom = Total number of students - Number of students in Mrs. Fetter's class - Number of students in Mrs. Cassy's class
Number of students in the last classroom = 90 - 40 - 20
Number of students in the last classroom = 30
Now that we know there are 30 students in the last classroom, we can calculate the percentage.
Percentage = (Number of students in the last classroom / Total number of students) x 100
Percentage = (30 / 90) x 100
Percentage = 33.33%
Therefore, 33.33% of the students make up the last classroom.