Trains A and B run on different days between the same destinations X and Y. A and B depart from X with a time difference of about 2 hours, share the same time slot for about 30% of their journeys and eventually reach Y with a time difference again of about 2 hours. Find A, B, X and Y.
Hint #1 Both A and B are weeklies
Hint #2 Both A and B belong to the same zone
Hint...
more... #3 Both are North South trains