Multiple choice general knowledge math & puzzles

A train 240 m long passes a pole in 24 seconds. How long will it take to pass a platform 650 m long?

  1. 65 sec

  2. 89 sec

  3. 100 sec

  4. 150 sec
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

First find train speed: 240 m in 24 sec = 10 m/s. To cross the 650 m platform, total distance = train length + platform length = 240 + 650 = 890 m. Time = 890 m / 10 m/s = 89 seconds. Option A (65 sec) ignores train length, Option C (100 sec) uses incorrect calculation.

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