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      Question

      The speed of a boat in still water is 15 km/h and the

      speed of the stream is 3 km/h. Find the time taken to travel 54 km downstream.
      A 3 hrs Correct Answer Incorrect Answer
      B 2.5 hrs Correct Answer Incorrect Answer
      C 5 hrs Correct Answer Incorrect Answer
      D 3.5 hrs Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ, Downstream speed = 15 + 3 = 18 km/h Time = 54/18 = 3 hours

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