Question
Download Solution PDFA train of length 350 m crosses a bridge of length 250 m in 20 seconds. What is the speed of the train (in km/h)?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Length of train = 350 m
Length of bridge = 250 m
Total time = 20 seconds
Formula used:
Speed = Total Distance / Time
Total Distance = Length of train + Length of bridge
Calculation:
Total Distance = 350 + 250 = 600 m
Speed (in m/s) = Total Distance / Time
⇒ Speed = 600 / 20
⇒ Speed = 30 m/s
Speed (in km/h) = (30 × 18) / 5
⇒ Speed = 108 km/h
∴ The correct answer is option (3).
Last updated on May 26, 2025
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