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Question

Ramesh sees a train passing over 1 km long bridge. The length of the train is half that of bridge. If the train clears the bridge in 2 minutes, the speed of the train is

A
45 km/hr
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B
43 km/hr
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C
50 km/hr
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D
None of these
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Solution

The correct option is A 45 km/hr
(a)
Distance travelled in 2 minutes

= (1+12)km i.e.32kms

Distance covered in 1 hr =
(32×602)km

= 45 km

Speed of the train = 45 km/hr

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