WBCS.LIVE practice question

Pipes A and B working together can fill a water tank in 10 hours. They worked together for 4 hours and then B stopped working and A continued till the end. It took a total of 13 hours to fill the tank. How much time will A alone take to fill the tank?

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

Answer options

  1. 16 hrs
  2. 13 hrs
  3. 15 hrs
  4. 12 hrs

Correct answer and explanation

Correct answer: 15 hrs