issb mathematics MCQ #375

A fills tank in 5 h, B in 10 h. Together?

issb mathematics MCQ #375

  1. Question 1

    Q1. A fills tank in 5 h, B in 10 h. Together?

    • A) 3 h
    • B) 3.33 h
    • C) 4 h
    • D) 5 h

    Answer: 3.33 h

    Explanation: Rates 1/5 plus 1/10 equals 3/10 so time is 10/3 hours. Work each step carefully; ISSB math rewards accuracy under time pressure.