issb mathematics MCQ #366

Weighted average: 10 items avg 6 and 20 items avg 9?

issb mathematics MCQ #366

  1. Question 1

    Q1. Weighted average: 10 items avg 6 and 20 items avg 9?

    • A) 7
    • B) 8
    • C) 8.5
    • D) 9

    Answer: 8

    Explanation: Total sum 60 plus 180 divided by 30 items equals 8. Work each step carefully; ISSB math rewards accuracy under time pressure.