Question

A train running at a speed of 108 kmph passes a pole on the
platform in 18 seconds. Find the length of the train in metres. ​

Answer 1

Given:

Speed = 108 kmph

Time Taken = 18 seconds

To Find:

The length of the train in metres

Explanation

For questions as such, you need to ensure that the units of measurement are the same.

Solution

Find the time taken in hour:

Time taken = 18 seconds

Time taken = 18 ÷ 60 min = 0.3 mins

Time taken = 0.3 ÷ 60 hour = 0.005 hour

Find the distance traveled (which is the length of the train):

Distance = Time x Speed

Distance = 108 x 0.005

Distance = 0.54 km

Find the length in metres:

Length = 0.54 x 1000m

Length = 540 m

Answer: 540 m

Answer 2

Step-by-step explanation:

Distance = Speed × time

Speed of train =108 km/hr

Time = 18 seconds = 18/3600 =1/200 hour

Distance = length of the train

Distance = 108 km/hr × 1/200 hour

= 108/200

= 27/50 km.

= 27000/50 m

=540 m