issb mathematics MCQ #677

8 workers finish in 15 days. 12 workers finish in?

issb mathematics MCQ #677

  1. Question 1

    Q1. 8 workers finish in 15 days. 12 workers finish in?

    • A) 8 days
    • B) 9 days
    • C) 10 days
    • D) 12 days

    Answer: 10 days

    Explanation: Total 120 man-days so 120 divided by 12 is 10 days. Work each step carefully; ISSB math rewards accuracy under time pressure.