Question

3. Rajdhani Express and Gareeb Rath having equal length are running on parallel lines in the same direction from Delhi to Bihar at 46 km/hr and 36 km/hr. The faster train passes the slower train in 36 seconds. The length of each train is:​

Answer 1

Answer: Correct option is

A

50 m

To cross each other, two trains have to cover a distance equal to the sum of the lengths of the train.

Let the length of the trains be x m each.

So the distance to be covered =2x.

Now the trains are running int he same direction.

∴ Their relative speed=(46−36)km/hr.=10km/hr.=10×  

18

5

​

km/hr.=  

9

25

​

m/sec.

So, the time taken by the trains to cove 2x m distance

=2x÷  

9

25

​

sec.

∴ By the given conditions,

2x÷  

9

25

​

sec=36sec.

Or x=50m.

So the length of each train =50m.

Step-by-step explanation:

Answer 2

Answer:

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