Mathematics · Average

The average marks of 5 students in a subject are 68. By how much will the average increase if the marks of one student were wrongly entered as 65 instead of 80?

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The average marks of 5 students in a subject are 68. By how much will the average increase if the marks of one student were wrongly entered as 65 instead of 80?

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The average marks of 5 students in a subject are 68. By how much will the average increase if the marks of one student were wrongly entered as 65 instead of 80?

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