Mathematics · Speed, Time and Distance
A man in a moving train notices that he can count 21 telephone posts in exactly one minute. If consecutive posts are known to be 50 meters apart, what is the speed of the train?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 163 km/hr
- 260 km/hr✓
- 357 km/hr
- 455 km/hr
Correct answer
60 km/hr
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