issb mathematics MCQ #154

One pipe fills a water tank in 6 hours and a second pipe fills it in 3 hours. How long will both pipes together take to fill the tank?

issb mathematics MCQ #154

  1. Question 1

    Q1. One pipe fills a water tank in 6 hours and a second pipe fills it in 3 hours. How long will both pipes together take to fill the tank?

    • A) 2 hours
    • B) 3 hours
    • C) 4 hours
    • D) 1.5 hours

    Answer: 2 hours

    Explanation: Combined filling rate is 1/6 plus 1/3, which equals 1/2 of the tank per hour. The tank fills in 2 hours.