The management batch of a college has two sections, A and B. Section A has 22 students and their average marks are 75, whereas section B has 30 students and their average marks are 60. What are the average marks of the whole batch? (Round off to two decimal places)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e 66.35.
Section A: 22 students, average marks = 75
Section B: 30 students, average marks = 60
Total marks of A = 22 × 75 = 1650
Total marks of B = 30 × 60 = 1800
Total students = 22 + 30 = 52
Total marks = 1650 + 1800 = 3450
Average = 3450 ÷ 52 = 66.35