There are 3 Sections A,B and C in classX with 25, 40 and 35 students respectively. The average marks obtained by Section A,B ands C are 70%, 65% abds 50% respectively. Find the average marks of entire class X.
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The average mark of the entire class is 61%
Step-by-step explanation:
The number of students in section A is 25
The marks obtained by section A is
= 17 × 25
= 1750
The number of students in section B is 40
The marks obtained by section B is
= 65 × 40
= 2600
The number of students in section C is 35
The marks obtained by section C is
= 50 × 35
= 1750
Total marks = 1750 + 2600 + 1750 = 6100
Total number of students = 25 + 40 + 35 = 100
The average mark of entire class X is given by
= 61%
Therefore the average mark of the entire class is 61%
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