Mathematics · Speed, Time and Distance

Train A crosses train B completely in 90 seconds, with the trains running in opposite directions. The lengths of trains A and B are 900 metres and 1800 metres, respectively. If the speed of train A is 45 km/h, then in how much time can train B cross a stationary pole?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

16507 seconds
27207 seconds✓
38107 seconds
48307 seconds

Correct answer

7207 seconds

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Train A crosses train B completely in 90 seconds, with the trains running in opposite directions. The lengths of trains A and B are 900 metres and 1800 metres, respectively. If the speed of train A is 45 km/h, then in how much time can train B cross a stationary pole?

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Train A crosses train B completely in 90 seconds, with the trains running in opposite directions. The lengths of trains A and B are 900 metres and 1800 metres, respectively. If the speed of train A is 45 km/h, then in how much time can train B cross a stationary pole?

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