Question

A 152.5 meter long train running at a speed of 57 km/h crosses a platform in 39 seconds. What is the length of the platform?

• A. 378 m
• B. 278 m
• C. 356.5 m
• D. 465 m

Answer 1

Answer:

D. 465 m

Let, the length of the platform = x metre Speed of the train = 57 km/hr = 57 × (5/18) m/s ⇒ (x + 152.5) = 39 × 57 × (5/18) ⇒ x + 152.5 = 617.5 ⇒ x = 617.5 - 152.5 ⇒ x = 465 m