On Saturday , 20 of the students in a class took a test and their average score was 80. On Tuesday, the other 5 students took the test, and their average score was 90 . what was the average for the entire class?
Created: 6 years ago |
Updated: 3 years ago
best des
Average score of entire class = (20×80 + 5×90) / (20 + 5) = 82
Md Azizur Rahman
Founder of Satt
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