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 sec
B) 22 sec
C) 20 sec
D) 36 sec
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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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