issb mathematics MCQ #402

Tap A 4 min, B 6 min together fill?

issb mathematics MCQ #402

  1. Question 1

    Q1. Tap A 4 min, B 6 min together fill?

    • A) 2.4 min
    • B) 3 min
    • C) 5 min
    • D) 10 min

    Answer: 2.4 min

    Explanation: Rates 1/4 plus 1/6 equals 5/12 so time 12/5 equals 2.4 min.