Question

A train is running at a speed of 64 km/hr passes an electric pole in 16 seconds. How much in
will it take to cross the platform 256 mlong?
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Answer 1

Answer:

the length of the train =covered distance in 16 sec

in 16 sec the train covered the distance

64000×16/3600 m

=640×4/9 m

=2560/9 m

here 64 km=64000 m and 1 hour =3600 sec

to cross the platform 256 m long the train covered the distance =(256+2560/9) m

=256(1+10/9) m=256×19/9 m

time take by the train =3600×256×19/9×64000 sec

=36×256×19/9×640 sec

=16×19/10 sec

=304/10sec

=30.4sec

Answer 2

Step-by-step explanation:

speed=64km/h=64×5/18=17.78m/s

speed=distance/time

17.78=256/t

t=256/17.78

time=14.4 seconds