The railway track length, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:
Pick:
A) 300 m
B) 245 m
C) 350 m
D) 250 m
E) 260 m
speed = (45*5/18) =&gt; 25/2 m/sec   time = 30 sec   length of bridge =&gt; x   =&gt;130+x/30 = 25/2   2(130+x)=750   x=245 m   ANSWER 245 m
<result>B</result>
The railway track length, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is: