general math MCQ #857

The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?

general math MCQ #857

  1. Question 1

    Q1. The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?

    • A) 50
    • B) 47.5
    • C) 59
    • D) 52.5

    Answer: 52.5

    Explanation: Weighted average = (30 × 40 + 50 × 60) ÷ (30 + 50) = 4,200 ÷ 80 = 52.5.