The average marks obtained by a class in an examination were calculated as…

GATE · 2025 · CS · Set 1 · General AptitudeGATE · 2025 · AG · General AptitudeGATE · 2025 · MA · General Aptitude

The average marks obtained by a class in an examination were calculated as 30.8. However, while checking the marks entered, the teacher found that the marks of one student were entered incorrectly as 24 instead of 42. After correcting the marks, the average becomes 31.4. How many students does the class have?

  1. A.

    25

  2. B.

    28

  3. C.

    30

  4. D.

    32

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