63. Two identin o identical trains ...
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63. Two identin o identical trains A and B running in opposite irections at same speed take 2 minutes to cross bach other completely. The number of bogies of A e increased from 12 to 16. How much more time would they now require to cross each other? (SNAP, 2007) (a) 20 sec (b) 40 sec (c) 50 sec (d) 60 sec

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Total initial bogies is ( 12+12=24 ) Additional bogies ( =16-12=4 ) 24 bogies take 2 minutes. 4 bogies will take: ( =frac{(2 times 60)}{(24)} times 4 ) ( =20 mathrm{sec} )
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