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Total scores of the 35 juniors = 35 x 80 = 2800

Total scores of the 15 seniors = 15 x 70 = 1050

Combined total score = 2800 + 1050 = 3850

Average or arithmetic mean of the set of 50 students = 3850 ÷ 50 = 77.

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14y ago
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14y ago

[ (35 x 80) + (15 x 70) ] / 50 = (2,800 + 1,050) / 50 = 3,850 / 50 = 77

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13y ago

77 is average score

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Q: A total of 50 students took a math test 35 attained a score of 80 while 15 attained a score of 70 what was the average score for all 50 students?
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