Discussion

Explanation:

When running in same direction, time taken for two trains to cross each other = L1+L2f-s

L1 and L2 are the lengths of the two trains while f and s are the speeds of faster and slower trains respectively.

Let the length of the two trains be L (same length).

⇒ 54 = L+L(40-30)×518

⇒ 54 × 50/18 = 2L

⇒ 2L = 150

⇒ L = 75 meters

Hence, option (d).

» Your doubt will be displayed only after approval.


Doubts


Feedback

Help us build a Free and Comprehensive Preparation portal for various competitive exams by providing us your valuable feedback about Apti4All and how it can be improved.


© 2023 | All Rights Reserved | Apti4All