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      Question

      A boat can cover 132 km in downstream in 11 hours and

      170 km in upstream in 17 hours. Find the speed of boat in still water
      A 13 km/hr Correct Answer Incorrect Answer
      B 10 km/hr Correct Answer Incorrect Answer
      C 12 km/hr Correct Answer Incorrect Answer
      D 11 km/hr Correct Answer Incorrect Answer

      Solution

      Downstream speed of the boat = 132/11 = 12 km/hr Upstream speed of the boat = 170/17 = 10 km/hr Speed of boat in still water = (12 + 10)/2 = 11 km/hr

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