Question

Average marks of 26 students of Section A of Class 11 is 73 and average marks of 24 students of Section B of class 11 is 86. Find out the average marks of class 11​

Answer 1

Answer:

Answer:The average marks of class 11 is 79.5

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Answer 2

Average marks of class 11 is 79.24.

Given - Average marks, number of students

Find - Average marks of class 11

Solution - Average = total number of marks/number of students.

Finding total number of marks of both sections. Then finding the average marks of class 11.

Class 11 Section A

Average marks = 73

Number of students = 26

Total marks = 73*26

Total marks = 1898

Class 11 Section B

Average marks = 86

Number of students = 24

Total marks = 86*24

Total marks = 2064

Number of students in class 11 = 26 + 24

Number of students in class 11 = 50

Total marks = 1898 + 2064

Total marks = 3962

Average marks = 3962/50

Average marks = 79.24

Hence, average marks of class 11 are 79.24.

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