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Q.
Length of train is 170 meters and speed of train is 63 km/hour. This train can pass a bridge in 30 seconds, then find the length of the bridge.
A.
355 mts
B.
325 mts
C.
365 mts
D.
312 mts
View Answer
Correct choice: A
Explanation:
Given speed = 63 km/hr = 63× 5/18=35/2 m/s Let the length of the bridge = x mts Given time taken to cover the distance of (170 + x)mts is 30 sec. We know speed = dis tan ce /time m/s ⇒352=170+x30 --> x = 355 mts.
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