issb mathematics MCQ #610

Tap A fills 5 h, B fills 10 h. Both open, fill time?

issb mathematics MCQ #610

  1. Question 1

    Q1. Tap A fills 5 h, B fills 10 h. Both open, fill time?

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

    Answer: 3.33 h

    Explanation: Combined rate 1/5 plus 1/10 equals 3/10 so 3.33 hours. Work each step carefully; ISSB math rewards accuracy under time pressure.