Question

Students in two classrooms were given a mathematics test. The first classroom had 25 students and their average score was 86%. The second classroom had 15 students and their average score was 94%. If the teacher combined the test scores of students in both classes, what is the average score for both classes?​

Answer 1

Explanation:

Answer 2

Total percent in first classroom = 25 x 86 = 2150
Total percent in second classroom = 15 x 94 = 1410
Total for both rooms = 2150 + 1410 = 3560 for 40 students
Average score across both rooms = 3560/40 = 89%