Question

A train running at 25 km/hr takes 18 seconds to pass a platform.Next, it takes 12 seconds to pass a man walking at 5 km/hr in the opposite direction. Find the sum of the length of the train and that of the platform?.

• A. 125 m
• B. 135 m
• C. 145 m
• D. 155 m

Answer 1

Answer: (A)

125 m

We know that,

Distance$=speed\times time$

It's probably best to convert to meters so we can find the length of the platform.

Distance $=25000$ metres/h $\times$18 seconds $\times \left(\frac{1}{60}\times 60\right)$

Distance $=\left(25000\times \frac{18}{3600}\right)$

$=125m$

Then,

Option $A$ is correct answer.