📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

  • google app store apple app store
  • ✖

      Question

      Speed of a boat in still water is 11 kmph and speed of

      stream is 9 kmph. A man rows to a place at a distance of 40 km and come back to starting point. The total time taken by him is:
      A 26 hrs Correct Answer Incorrect Answer
      B 24 hrs Correct Answer Incorrect Answer
      C 22 hrs Correct Answer Incorrect Answer
      D 20 hrs Correct Answer Incorrect Answer

      Solution

      Rate upstream = 11 – 9 = 2 kmph Rate downstream = 11 + 9 = 20 kmph Time taken to go upstream = 40/2 = 20 hr Time taken to go downstream = 40/20 = 2 hr Total time = 20 + 2 = 22 hrs

      Practice Next

      Relevant for Exams:

      ask-question