Question

Two trains of equal lengths are running at speeds of 50 km/h and 58 km/h. The two train crossed each other in 30 seconds when travelling in opposite direction. In what time will they cross each other when travelling in the same direction?
1. 405 seconds
2. 305 seconds
3. 205 seconds
4. 105 seconds

Answer 1

Correct Answer - Option 1 : 405 seconds

Given:

Two trains running with speed 50 km/h and 58 km/h

Concept:

Speed = Distance/Time

Calculation:

Let us assume length of train are X

⇒ 30 × (50 + 58) × (5/18) = 2X

⇒ X = 450 m

⇒ Time taken by them when they cross each other in same direction = (2 × 450)/{5/18 × (58 - 50)} = 405 seconds

∴ The required result will be 405 seconds.