Question
A train 200 m long running at 54 km/hr takes 40 seconds
to cross a bridge. The length of the bridge isSolution
Speed of train = 54 km/hr = 54 × (5 / 18) = 15 m / sec If the length of bridge be x metre, then ⇒ 15 = (200 + x)/40 ⇒ 200 + x = 600 ⇒ x = 600 – 200 = 400 metre
A-5,  A,  35,  52, 78, 115
30, 42, 48, 54, 65, 81, 126
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