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Two Trains Are Running At 40 Km/hr And 20 Km/hr Respectively In The Same Direction. Fast Train Completely Passes A Man Sitting In The Slower Train In 5 Seconds. What Is The Length Of The Fast Train?

Answer»

As train are RUNNING in same direction 

so Relative SPEED = (40 - 20) km/hr = 20 km/hr

= ( 20 x 5/18 ) m/sec = 50/9 m/sec.

Formula Used: Distance = Speed * Time

Now Length of Faster Train = ( 50/9 x 5 ) m = 250/9 m 

= 27 7/9 m.

As train are running in same direction 

so Relative speed = (40 - 20) km/hr = 20 km/hr

= ( 20 x 5/18 ) m/sec = 50/9 m/sec.

Formula Used: Distance = Speed * Time

Now Length of Faster Train = ( 50/9 x 5 ) m = 250/9 m 

= 27 7/9 m.



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