Question

Two trains are moving in the same direction at 65 km/hr and 45 km/hr. respectively. The faster train crosses a man in the slower train in 18 seconds. What is the length of the faster train?

• A. 120 m
• B. 110 m
• C. 55 m
• D. 100 m

Answer 1

Answer:

D. 100 m

Relative speed of both trains, if both are running in same direction = (65 - 45) = 20km/hr Let length of faster train be x m, 20 × (5/18) = x/18 ⇒ x = 20 × (5/18) × 18 x = 100 m