Quantitative Aptitude • Time, Speed & WorkMedium
A train 340 m long is running at 180 km/h. How long will it take to cross a platform 610 m long?
A. 19 seconds✓ Correct Answer
B. 5.28 seconds
C. 12.2 seconds
D. 6.8 seconds
💡 Solution & Explanation
To cross a platform, the train covers its own length plus the platform: 340 + 610 = 950 m. Speed = 180 × 5/18 = 50 m/s. Time = 950 ÷ 50 = 19 seconds. Using only the train's length gives 6.8 seconds, which is the time to pass a pole, not a platform.
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