Question
Mathematics Question on Average
A school has 4 sections of Chemistry in Class X having 40, 35, 45 and 42 students. The mean marks obtained in Chemistry test are 50, 60, 55 and 45 respectively for the 4 sections. Determine the overall average of marks per student.
A
50.25
B
52.25
C
51.25
D
53.25
Answer
52.25
Explanation
Solution
The correct option is (B) : 52.25