Question

A 270 m long train running at the speed of 120 km per hour cross another train running in the opposite direction at the speed of 80 km per hour in 9 seconds what is the length of the other train

Answer 1

Hi..

Relative speed = (120 + 80) km/hr
=200 x(5/18)m/sec
=500/9 m/sec.

Let the length of the other train be x metres.
Then,(x + 270)/9=500/9

x + 270 = 500
x = 230...


Hope this helps u!!

Answer 2

Answer:

Relative speed = (120 + 80) km/hr

=200 x(5/18)m/sec

=500/9 m/sec.

Let the length of the other train be x metres.

Then,(x + 270)/9=500/9

x + 270 = 500

x = 230