Question:
A train 180 m long crosses a platform 270 m long in 30 seconds. The speed of the train is
A train 180 m long crosses a platform 270 m long in 30 seconds. The speed of the train is
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Crossing distance is train length plus platform length; then convert m/s to km/h using 18/5.
Updated On: Jul 8, 2026
- 54 km/h
- 45 km/h
- 60 km/h
- 50 km/h
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The Correct Option is A
Solution and Explanation
Step 1: Distance covered.
To cross a platform the train covers its own length plus the platform, \(180+270=450\) m.
Step 2: Speed in m/s.
\(\dfrac{450}{30}=15\) m/s.
Step 3: Convert to km/h.
\(15\times\dfrac{18}{5}=54\) km/h.
\[\boxed{54\ \textrm{km/h}}\]
To cross a platform the train covers its own length plus the platform, \(180+270=450\) m.
Step 2: Speed in m/s.
\(\dfrac{450}{30}=15\) m/s.
Step 3: Convert to km/h.
\(15\times\dfrac{18}{5}=54\) km/h.
\[\boxed{54\ \textrm{km/h}}\]
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