a train 250 m long is running at a speed of 27 km / hr . in what time will it pass a bridge 200 m long ?
"speed = 27 * 5 / 18 = 15 / 2 m / sec total distance covered = 250 + 200 = 450 m required time = 450 * 2 / 15 = 60 sec answer : e"
divide(250, multiply(subtract(27, 200), const_0_2778))