issb mathematics MCQ #815

15 workers finish in 8 days. 20 workers finish in?

issb mathematics MCQ #815

  1. Question 1

    Q1. 15 workers finish in 8 days. 20 workers finish in?

    • A) 5 days
    • B) 6 days
    • C) 7 days
    • D) 8 days

    Answer: 6 days

    Explanation: Total 120 man-days so 120 divided by 20 is 6 days. Work each step carefully; ISSB math rewards accuracy under time pressure.