Multiple choice

Pipe A takes 10 minutes less than does pipe B to fill a petrol tank, but takes 10 minutes 25 seconds longer than the two together. An outlet C can empty the tank in 10 minutes. What is the time taken to fill the tank, if all the three pipes are opened together?

  1. 31.81 minutes

  2. 35.65 minutes

  3. 42.28 minutes

  4. 45.79 minutes

Reveal answer Fill a bubble to check yourself
A Correct answer