Question

A train is running at a speed of 60 kmph crosses a platform double its length in 32.4 seconds. What is the length of the platform?

• A. 180 m
• B. 240 m
• C. 360 m
• D. 90 m

Answer 1

Answer: (C)

360 m

Let the length of the train be 'x' m

Length of the platform $=2xm$

Total distance traveled by the train $=x+2x=3xm$

Speed of the train $=60kmph=60\times \frac{5}{18}m/sec$

Distance $=$ Speed $\times$ Time

$3x=60\times \frac{5}{18}\times 32.4$

$x=180m$

$\therefore$ The length of the platform $=2x=2\times 180=360m$