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A 300 metre long train crosses a platform in 39 seconds while it crosses a signal pole in 18 seconds. What is the length of the platform?

Correct Answer: 350 m

Explanation:

Speed = 300 m/sec = 50 m/sec.
18 3


Let the length of the platform be x metres.



Then, x + 300 = 50
39 3


⟹ 3(x + 300) = 1950


x = 350 m.


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