346  Average
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Class A - 8 students with the score 50%.
Class B - 2 students with the score 60%.
What is the total average score?



Class A - 14 students with the score 80%.
Class B - 6 students with the score 70%.
What is the total average score?



Class A - 8 students with the score 80%.
Class B - 2 students with the score 40%.
What is the total average score?



Class A - 14 students with the score 80%.
Class B - 6 students with the score 70%.
What is the total average score?



Class A - 7 students with the score 70%.
Class B - 3 students with the score 70%.
What is the total average score?



Class A - 5 students with the score 80%.
Class B - 5 students with the score 80%.
What is the total average score?



Class A - 8 students with the score 90%.
Class B - 2 students with the score 60%.
What is the total average score?



Class A - 15 students with the score 80%.
Class B - 5 students with the score 90%.
What is the total average score?



Class A - 8 students with the score 70%.
Class B - 2 students with the score 80%.
What is the total average score?



Class A - 3 students with the score 70%.
Class B - 7 students with the score 80%.
What is the total average score?



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346    52 77 72 77 70 ( 348 )   80 84 82.5 72 77 ( 395.5 )   [[ 743.5 ]]