Discussion

Explanation:

Initial sum of the marks of all students across all subjects = 30 × 80% × 200 × 5 = 24,000

Sum of the marks of all students across all subjects after revaluation = 30 × 80.02% × 200 × 5 = 24,006

∴ Marks of these students increased by 6.

Least increase in marks of one of the students can be 0, hence maximum increase in marks of the other student must be 6.

Hence, 6.

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