Multiple choice

If 'A' takes 20 seconds more to cross Train 'B', than the time taken for the trains to cross each other if they run in opposite directions. What is the length of each train?

  1. 100 m

  2. 120 m

  3. 150 m

  4. Cannot be determined

  5. 170 m
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The problem provides insufficient information about the speeds of the trains or their relative motion to determine the length of the trains.

AI explanation

The problem compares the time taken for one train to cross another while moving in the same direction versus the opposite direction, but it provides no actual numerical values for the speeds of the trains or any specific time duration. The formulas for crossing times depend on both the lengths of the trains and their relative speeds. Since there are infinitely many possible lengths and speeds that could satisfy the given 20-second difference without additional constraints, the exact lengths cannot be uniquely determined.

Keep practicing — related questions