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Question

Find the average age of students for a particular class given below find their collective average.

ClassNumber of studentsAge8120101013016


  1. 13.12

  2. 10

  3. 11

  4. 14


Solution

The correct option is A

13.12


Collective average age of students

=(120×10) + (130×16)(120+130)

=1200+2080250

=13.12

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