Class X has 45 students scoring average marks of 30 and class Y has 35 students scoring average marks of 18. Find the average marks of the students of both classes together.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 24.75.
Total marks of Class X = 45 × 30 = 1350
Total marks of Class Y = 35 × 18 = 630
Total students = 45 + 35 = 80
Combined average = (1350 + 630) ÷ 80 = 1980 ÷ 80 = 24.75