A tank has two inlet pipes A and B and an outlet pipe C. A takes 5 hours to all up the tank. B takes 8 hours to fill it up and outlet C takes 13 hours 20 minutes to empty the full tank. Pipe A opened first and the tank starts filling up. After 50 minutes. pipe B also opened. If outlet is opened iter another 80 minutes how many more minutes will it take to fill up the tank if you answer the question I will mark as brainliest