Two pipes A & B would be fill a tank in 20 & 30 minutes respectively. Both pipes being oppen, find when A must be turned off so that the tank may be just filled in 15 minutes.

গণিত Pipe and Tank 07 Oct, 2020

প্রশ্ন Two pipes A & B would be fill a tank in 20 & 30 minutes respectively. Both pipes being oppen, find when A must be turned off so that the tank may be just filled in 15 minutes.

  • ক.
    After 10 minutes
  • খ.
    After 20 minutes
  • গ.
    After 15 minutes
  • ঘ.
    None

সঠিক উত্তর

After 10 minutes

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Pipe and Tank