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Answer is above mentioned.
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tahseen619:
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Hey,
Bridge length=400Km
Train Length=200km
Speed of train=36km\h
Train:
speed= distance/time
=>36=200/t
=>t=200/36=50/9=5.55minutes
Here trains takes 5.55min to cover 200km
Hence,it would take 11.10min to cover 400km.
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