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. 65secs

  2. 89secs

  3. 100secs

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

First find the train's speed: 240m/24s = 10 m/s. To pass a platform, the train must cover its own length plus the platform length: 240 + 650 = 890m. Time = 890/10 = 89 seconds. This is a standard train problem requiring you to account for both the train's length and the platform length.

AI explanation

Passing a pole means covering just the train's own length, so 240 m in 24 s gives a speed of 10 m/s. To pass a 650 m platform, the train must cover its own length plus the platform's length: 240+650=890 m, which at 10 m/s takes 89 seconds.

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