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      Question

      A boat can cover 176 km in downstream in 11 hours and

      150 km in upstream in 15 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 = 176/11 = 16 km/hr Upstream speed of the boat = 150/15 = 10 km/hr Speed of boat in still water = (16 + 10)/2 = 13 km/hr

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