a train 360 m long is running at a speed of 54 km / hr . in what time will it pass a bridge 140 m long ?
"speed = 54 * 5 / 18 = 15 m / sec total distance covered = 360 + 140 = 500 m required time = 500 * 1 / 15 = 33.33 sec answer : d"
divide(360, multiply(subtract(54, 140), const_0_2778))