a train 360 m long is running at a speed of 45 km / hr . in what time will it pass a bridge 165 m long ?
": speed = 45 * 5 / 18 = 25 / 2 m / sec total distance covered = 360 + 165 = 525 m required time = 525 * 2 / 25 = 42 sec answer : e"
divide(360, multiply(subtract(45, 165), const_0_2778))