A man rowing in favour of current can go 80 km in 10 hrs and he can go the same distance in 40 hrs against the current. What is the speed of the current per hour?

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Boat and Stream

প্রশ্নঃ A man rowing in favour of current can go 80 km in 10 hrs and he can go the same distance in 40 hrs against the current. What is the speed of the current per hour?

  • ক. 3 km
  • খ. 4 km
  • গ. 5 km
  • ঘ. 10 km

সঠিক উত্তরঃ

3 km
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Boat and Stream