engineering intelligence MCQ #115

A tank can be filled by two pipes, A and B, in 4 and 6 hours, respectively. How long will it take to fill the tank if both pipes are used together?

engineering intelligence MCQ #115

  1. Question 1

    Q1. A tank can be filled by two pipes, A and B, in 4 and 6 hours, respectively. How long will it take to fill the tank if both pipes are used together?

    • A) 2.4 hours
    • B) 3 hours
    • C) 2 hours
    • D) 3.5 hours

    Answer: 2.4 hours

    Explanation: Rate of A = 1 / 4, Rate of B = 1 / 6. Combined rate = 1 / 4 + 1 / 6 = 5 / 12. Time = 1 / (5 / 12) = 12 / 5 = 2.4 hours.