Pipe A can fill a tank in 3 hours, pipe B can fill the same tank in 7 hours and pipe C can fill the same tank in 42 hours. If they are switched on together, how much time (in hours) will they take to fill 1/2 of the same tank?

Subject: Mathematics | Topic: Arithmetic | Difficulty: MEDIUM

Options

  1. (A) 4
  2. (B) 2
  3. (C) 1
  4. (D) 3

Verified Answer

Option (C): 1

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