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

      Question

      Train P starts from Lucknow to Dehradun at 11:55 am with

      an average speed of 27.5 m/s. Train Q starts from Dehradun to Lucknow at 1:35 pm with an average speed of 22.5 m/s. At what time the two trains will meet each other if the distance between Lucknow and Dehradun is 615 Km.
      A 3:35 pm Correct Answer Incorrect Answer
      B 4:05 pm Correct Answer Incorrect Answer
      C 5:05 pm Correct Answer Incorrect Answer
      D 2:45 pm Correct Answer Incorrect Answer
      E 6:05 pm Correct Answer Incorrect Answer

      Solution

      Speed of train P = 27.5 × 18/5 = 99 Km/h Speed of train Q = 22.5 × 18/5 = 81 Km/h Distance travelled by train P till 1:35 pm = 99 × 5/3 = 165 Km Relative speed of trains = 99 + 81 = 180 Km/h Remaining distance to be travelled after 1:35 pm = 615 – 165 = 450 Km Time taken to cover 450 Km = 450/180 = 5/2 = 2 hours 30 minutes So the two trains will meet each other at 1:35 + 2:30 = 4:05 pm

      Practice Next
      More Time and distance Questions
      ask-question