WBCS.LIVE practice question

Pipes P and Q when operated together fill a tank in 12 minutes. Q and R when operated together fill it in 20 minutes and P and R when operated together fill it in 15 minutes. In how many minutes can all the 3 pipes fill the tank when operated together?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 2 min
  2. 10 min
  3. 3 min
  4. 4 min

Correct answer and explanation

Correct answer: 10 min