issb mathematics MCQ #405

Age ratio 4:5, sum 36. Younger age?

issb mathematics MCQ #405

  1. Question 1

    Q1. Age ratio 4:5, sum 36. Younger age?

    • A) 14
    • B) 16
    • C) 18
    • D) 20

    Answer: 16

    Explanation: Four ninths of 36 equals 16 years. Work each step carefully; ISSB math rewards accuracy under time pressure.