Mathematics · Average

Three classes of students have average scores 70, 75, and 80 respectively. If the number of students in the three classes is in the ratio 4:1:5, what is the overall average score?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

173.5
276.5
375.5✓
474.5

Correct answer

75.5

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Three classes of students have average scores 70, 75, and 80 respectively. If the number of students in the three classes is in the ratio 4:1:5, what is the overall average score?

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Three classes of students have average scores 70, 75, and 80 respectively. If the number of students in the three classes is in the ratio 4:1:5, what is the overall average score?

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