Q: A person sees a train passing over 1 km long bridge. The length of the train is half that of the bridge if the train clears the bridge in 2 minutes the speed of the train is:
-
A
50 km/hr
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B
45 km/hr
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C
60 km/hr
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D
30 km/hr
B
Answer:
B
Explanation:
Distance covered in 2/60 hr = (1+1/2) km = 3/2 km.
Distance covered in 1 hr = (3/2 × 60/2) km = 45 km.
Speed of the train = 45 km/hr
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