Two trains of equal length are running on parallel tracks in the same direction at 40 km/h and 30km/h. The faster train passes the slower train in 54 seconds. The length of each train is:
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).
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