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    • Question

      A boat can cover 110 km in upstream in 11 hours and 140

      km in downstream in 7 hours. Find the speed of the stream.
      A 5 km/hr Correct Answer Incorrect Answer
      B 3 km/hr Correct Answer Incorrect Answer
      C 7 km/hr Correct Answer Incorrect Answer
      D 8 km/hr Correct Answer Incorrect Answer

      Solution

      Downstream speed = 140/7 = 20 km/hr Upstream speed = 110/11 = 10 km/hr Speed of stream = (20 – 10)/2 = 5 km/hr

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