The distance to be covered by the train is its length+ length of the bridge and its length once again to clear off the bridge. So the engine has to cover 400+800+400 = 1600 m from the time it touches the bridge and till the guard van leaves the bridge.
The train covers 40*1000m or 40000m in 60 minutes.
So to cover 1600 m it takes 1600*60/40000 = 2.4 minutes.
Answers & Comments
Answer:
The speed of the train is 40 km/h.
The distance to be covered by the train is its length+ length of the bridge and its length once again to clear off the bridge. So the engine has to cover 400+800+400 = 1600 m from the time it touches the bridge and till the guard van leaves the bridge.
The train covers 40*1000m or 40000m in 60 minutes.
So to cover 1600 m it takes 1600*60/40000 = 2.4 minutes.
Explanation:
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Answer:
time = distance/speed
t=400km/18km/hr
22.21 hr
Explanation:
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