Two Geometry classes at North Hollywood High School took the same quiz. Mr. Davis had 15 students in his class with a mean score of 70. Mrs. Brown's class of 25 students had a mean score of 80. Overall, what was the mean score for all students on the quiz?
A)74.50
B)75.00
C)76.25
D)75.75

Question

Quizplus · Accepted Answer

The overall mean score is calculated by taking the total sum of all scores divided by the total number of students. Mr. Davis's class had a total score of 15 * 70 = 1050, and Mrs. Brown's class had a total score of 25 * 80 = 2000. The combined total score is 1050 + 2000 = 3050, and the total number of students is 15 + 25 = 40. Therefore, the overall mean score is 3050 / 40 = 76.25.

Two Geometry Classes at North Hollywood High School Took the Same