Problema Solution
A class of 25 students took a science test. 10 students had an average score of 80. the other students had an average of score of 60. What is the average score of the whole class?
Answer provided by our tutors
To get the sum of weighted terms, multiply each average by the number of students that had that average and then sum them up.
80 × 10 + 60 × 15 = 800 + 900 = 1700
Total number of terms = Total number of students = 25
Using the formula
Answer: The average score of the whole class is 68.