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An 800 meters long train crosses a 450 meter long bridge in 50 seconds. What is speed (in km/hr) of the train?
  • a)
    90
  • b)
    100
  • c)
    80
  • d)
    85
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
An 800 meters long train crosses a 450 meter long bridge in 50 seconds...
We know that,
Speed = Distance/Time
⇒ Speed of the train = (800 + 450)/50 = 1250/50 = 25 m/s = 25 × (18/5) = 90 km/hr
(∵ 1 m/s = (18/5) km/hr)
∴ Speed of the train = 90 km/hr
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An 800 meters long train crosses a 450 meter long bridge in 50 seconds. What is speed (in km/hr) of the train?a)90b)100c)80d)85Correct answer is option 'A'. Can you explain this answer?
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