📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      The speed ratio of train A to train B is 3:2, and both

      trains are of equal length. Train A takes x seconds to cross train B when they are moving in the same direction and y seconds when they are moving in opposite directions. If the sum of x and y is 108 seconds, what is the value of (x – y)?
      A 65 seconds Correct Answer Incorrect Answer
      B 72 seconds Correct Answer Incorrect Answer
      C 94 seconds Correct Answer Incorrect Answer
      D 75 seconds Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Speed of train A = 3b Speed of train B = 2b Length of train A = B = a 2a = (5b) * 5/18 * y 36a = 25by ------- (1) 2a = b * 5/18 * x 36a = 5bx ------ (2) From (1) and (2) 25by = 5bx 5y = x x + y = 108 6y = 108 y = 18 seconds x = 90 seconds Required difference = 90 – 18 = 72 seconds

      Practice Next
      More Quant Miscellaneous Questions
      ask-question