Boat and Stream

A man can row downstream at 10 kmph and upstream at 5 kmp. The man's rowing rate in still water is--

  • ক. 2.5 km/hr
  • খ. 5 km/hr
  • গ. 7.5 km/hr
  • ঘ. 15 km/hr

উত্তরঃ 7.5 km/hr


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