a train 360 m long is running at a speed of 48 km / hr . in what time will it pass a bridge 140 m long ?
"speed = 48 * 5 / 18 = 40 / 3 m / sec total distance covered = 360 + 140 = 500 m required time = 500 * 3 / 40 = 37.5 sec answer : c"
divide(360, multiply(subtract(48, 140), const_0_2778))