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The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:

(a) 200m

(b) 225m

(c) 245m

(d) 250m

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by Arundhuti

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(a) 200m

(b) 225m

(c) 245m

(d) 250m

by Arundhuti

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hence x+130 is total distance

x+130/30=45*5/18 ( we know that distance/time=velocity)

after solving this equation

you get x=245m