Question
Download Solution PDFA class of 25 students took an English test. 15 students had an average score of 80. The other students had an average score of 60. What is the average score of the whole class?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Number of students with an average score of 80 = 15
Average score of these 15 students = 80
Number of students with an average score of 60 = 25 - 15 = 10
Average score of these 10 students = 60
Formula Used:
Average score of the whole class = Total score of all students / Total number of students
Calculation:
Total score of 15 students = 15 × 80
⇒ Total score of 15 students = 1200
Total score of 10 students = 10 × 60
⇒ Total score of 10 students = 600
Total score of the whole class = 1200 + 600
⇒ Total score of the whole class = 1800
Total number of students = 25
Average score of the whole class = 1800 / 25
⇒ Average score of the whole class = 72
The average score of the whole class is 72.
Last updated on Jun 24, 2025
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