The average marks of 30 students are 45 but after checking there are two mistakes found. After adjustment if a student got 45 more markes and other student got 15 less marks, then What will be the adjusted average?

45
44
47
46

Correct Answer: 44

Explanation:

Total number of all students of the class = 30 x 45 = 1350
∴ New average after adjustment = (1350 - 45 + 15)/30 = 1320/30 = 44

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