Question

A train 270m long is moving at the speed of 120km/h crosses another train running in opposite direction at the speed of 80km/h in 9 seconds...find the length of the other train

Answer 1

Relative speed = (120 + 80) km/hr

   =200×5/18 m/s

Let the length of the other train be x metres.

Then,x + 270=50099

$\frac{x + 270}{9} = \frac{500}{9 } \\ x + 270 = 500 \\ x = 230$


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