1.

A train 75 m long is moving at a speed of 45 km/hr. How long will it take to pass a platform 200 long?A) 42 secB) 22 secC) 20 secD) 36 sec

Answer»

Answer:

25second

Step-by-step explanation:

TOTAL discovered by the LENGTH of both trains

=50m+75m

and, Their relative speed in same direction

= 68−50=18 km/hr

∴(Speed SUBTRACTED in same direction)

then, the TIME to cross other will be

=125 m/sec18 kms

=125×1818×5m/sec

{∴1km/h=518m/s}

=25 seconds



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