A train speeds past a pole in 15 seconds and a platform 100 m long in – InterviewSolution

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1.	A train speeds past a pole in 15 seconds and a platform 100 m long in 25 seconds. Its length is:
Answer» Let the length of the train be x metres and its speed by y m/sec. Then, x = 15 y = x . y 15 x + 100 = x 25 15 15(x + 100) = 25x 15x + 1500 = 25x 1500 = 10x x = 150 m.

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