a train 360 m long is running at a speed of 45 km / hr . in what time will it pass a bridge 240 m long ?
"speed = 45 * 5 / 18 = 25 / 2 m / sec total distance covered = 360 + 240 = 600 m required time = 600 * 2 / 25 = 48 sec answer : d"
divide(360, multiply(subtract(45, 240), const_0_2778))