Question
Two trains, A and B, are moving in opposite directions
at speeds of 45 km/h and 60 km/h, respectively. The lengths of the trains are 120 meters and 150 meters. How much time will they take to cross each other?Solution
Relative speed = 45 + 60 = 105 km/h = 105 * 1000 / 3600 m/s = 175/6 m/s. Total distance = 120 + 150 = 270 meters. Time taken = 270 / (175/6) = 9.26 seconds Correct Option: b)Â
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