Problems on Trains - Arithmetic Aptitude Questions and Answers

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

150 m

200 m

350 m

400 m

Answer : Option C

Explanation :

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

Let the length of the platform be x meters.

Then, x + 300 / 39 = 50/3

3(x + 300) = 1950 ¨ x = 350m.

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