Two sections A and B of class VIII consist of 42 and 38 students, respectively. If the average marks of section A is 400 and that of section B is 320, find the average marks of the whole class.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 362.
Total marks of section A = 42 × 400 = 16800
Total marks of section B = 38 × 320 = 12160
Total students = 42 + 38 = 80
Total marks = 16800 + 12160 = 28960
Average marks = 28960/80 = 362