Solution: Find the total score from all the students: 82 x 42 + 79 x 38 = 6446 Divide the total score by the total number of students: 42 + 38 = 80 (82 x 42 + 79 x 38) ÷ (42 + 38) = 6446 ÷ 80 = 80.6
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