When two trains moving in opposite directions cross each other, the sum of their lengths is their total distance. The length of the first train = 250 meters and length of the second train = 150 meter Total distance = 250+150 = 400 meter Time = 20second Then Total speed in km/h = 400/20 × 18/5 = 72 km/h Speed of First train = 45 km/h Speed of second train = 72-45 = 27 km/h
A solution turns red litmus paper blue. Its Ph is likely to be
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Statements...
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