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      Question

      The speed of a boat in still water is 8 km/hr and speed

      of current is 3 km/hr. If time taken to cover a certain distance upstream is 11 hours, then how long will the boat take to cover the same distance downstream?
      A 7 hrs Correct Answer Incorrect Answer
      B 8 hrs Correct Answer Incorrect Answer
      C 6 hrs Correct Answer Incorrect Answer
      D 4 hrs Correct Answer Incorrect Answer
      E 5 hrs Correct Answer Incorrect Answer

      Solution

      Total distance = 11 × (8 – 3) = 55 km Required time = 55/ (8 + 3) = 55/11 = 5 hrs

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