Quantitative Aptitude • Time, Speed & WorkMedium
A train 890 m long is running at 216 km/h. How long will it take to cross a platform 310 m long?
A. 20 seconds✓ Correct Answer
B. 5.17 seconds
C. 14.83 seconds
D. 5.56 seconds
💡 Solution & Explanation
To cross a platform, the train covers its own length plus the platform: 890 + 310 = 1200 m. Speed = 216 × 5/18 = 60 m/s. Time = 1200 ÷ 60 = 20 seconds. Using only the train's length gives 14.83 seconds, which is the time to pass a pole, not a platform.
More Quantitative Aptitude Time, Speed & Work questions
- A is twice as efficient as B. Working together, they finish a job in 12 days. How many days would A take to…
- A car covers 504 km in 2 hours. What is its speed in metres per second?
- Two trains, 280 m and 420 m long, are running on parallel tracks in opposite directions at 54 km/h and 72…
- A train 340 m long is running at 180 km/h. How long will it take to cross a platform 610 m long?
- A can do a job in 10 days and B in 15 days. They work together for 2 days, and then A leaves. In how many…