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      Question

      Anshul lives on 13th floor and Keshav lives on 52th

      floor. Anshul goes up at a rate of 38 floors per minute and Keshav comes down at a rate of 40 floors per minute. At which floor they will meet? 
      A 38th Correct Answer Incorrect Answer
      B 26th Correct Answer Incorrect Answer
      C 32nd Correct Answer Incorrect Answer
      D 33rd Correct Answer Incorrect Answer

      Solution

      Total floors between Anshul and Keshav = 52 – 13 = 39 floors Relative speed = 38 + 40 = 78 floor/min Time taken by them to meet = total floors/relative speed = 39/78 = 1/2 min Anshul travels in 1/2 min = 1/2 x 38 = 19 floors Floor at which Anshul and Keshav will meet = 13 + 19 = 32nd floor

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