Multiple choice

The average mark of 36 students in section A is 86% and that of 24 students in section B is 96%. Find the average marks of all the students in section A and section B together.

  1. 90%

  2. 88%

  3. 92%

  4. 91%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total students = 36 + 24 = 60. Total marks = (36 × 86) + (24 × 96) = 3096 + 2304 = 5400. Weighted average = 5400/60 = 90%. This is correct. Option B (88%) is below the weighted average, Option C (92%) would require different section sizes or marks, and Option D (91%) has no calculation basis.

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