A train running speed is 45 km/hr and the length of train is 365 meter. In how long it will pass a bridge which is 170 meter long.

A) 40 sec

B) 42 sec

C) 42.8 sec

D) 54 sec

speed of train is 45 km/hr = (45 * 5/18) m/sec

= 25/2 m/sec

total distance covered by trian is =(170+365)

= 535 meter

time = distance/speed

= (535/(25/2))

= (535 * 2/25)

= 42.8 sec.

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