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- The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:
Question 1:
The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is: A. 200 m
B. 225 m
C. 245 m
Feedback Speed =(45 x 5/18)m/sec = (25/2)m/sec
Time = 30 sec.
Let the length of bridge be x metres.
130 + x/30 =25/2
2(130 + x) = 750
x = 245 m.
Time = 30 sec.
Let the length of bridge be x metres.
130 + x/30 =25/2
2(130 + x) = 750
x = 245 m.
D. 250 m
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