Question
Train A is 180 meters long, while another Train B is 240
meter long. Train A has a speed of 30 kmph and Train B’s speed is 40 kmph, if the trains move in opposite directions, then in what time will Train A pass Train B completely?Solution
Total distance = 180 + 240 = 420 meter Relative speed = (30 + 40) × 5/18 = 350/18 m/s Required time = (420 × 18)/ (70 × 5) = 21.6 sec
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