• Question

      A man rows to a place 42 km away and comes back to the starting point. If the speed of the stream is 2 km/hr and the speed of the boat in still water is 5 km/hr. Then what is the total time taken by him?

      A 16 hrs Correct Answer Incorrect Answer
      B 17 hrs Correct Answer Incorrect Answer
      C 20 hrs Correct Answer Incorrect Answer
      D 30 hrs Correct Answer Incorrect Answer
      E 25 hrs Correct Answer Incorrect Answer

      Solution

      42/((5+2)) + 42/((5-2)) = 6 + 14 = 20 hrs

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