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According to question, (3x + 13000)/(x + 10000 + 3x + 13000 + x + 15000) = 40000/80000 X = 12000 Required % = (x + 10000)/(x + 15000) x 100 = 81.48%
A train 150 m long running at 36 km/hr takes 50 seconds to cross a bridge. The length of the bridge is
A train 500 m long running at 108 km/hr takes 40 seconds to cross a bridge. The length of the bridge is