📢 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 50 m/s. Train Q starts from Dehradun to Lucknow at 1:35 pm with an average speed of 45 m/s. At what time the two trains will meet each other if the distance between Lucknow and Dehradun is 750 Km.
      A 3:50 pm Correct Answer Incorrect Answer
      B 4:05 pm Correct Answer Incorrect Answer
      C 2:55 pm Correct Answer Incorrect Answer
      D 2:45 pm Correct Answer Incorrect Answer
      E 4:05 pm Correct Answer Incorrect Answer

      Solution

      Speed of train P = 50 × 18/5 = 180 Km/h Speed of train Q = 45 × 18/5 = 162 Km/h Distance travelled by train P till 1:35 pm = 180 × 5/3 = 300 Km Relative speed of trains = 180 + 162 = 342 Km/h Remaining distance to be travelled after 1:35 pm = 750 – 300 = 450 Km Time taken to cover 450 Km = 450/342 = 4/3 = 1 hours 20 minutes So the two trains will meet each other at 1:35 + 1:20 = 2:55 pm

      Practice Next
      More Time and distance Questions
      ask-question