issb mathematics MCQ #533

A does job in 12 days, B in 36 days. Together?

issb mathematics MCQ #533

  1. Question 1

    Q1. A does job in 12 days, B in 36 days. Together?

    • A) 7 days
    • B) 8 days
    • C) 9 days
    • D) 10 days

    Answer: 9 days

    Explanation: Rates 1/12 plus 1/36 equals 1/9 so together 9 days. Apply the same method to similar ISSB quantitative items.