a train 495 m long is running at a speed of 63 km / hr . in what time will it pass a bridge 240 m long ?
"speed = 63 * 5 / 18 = 35 / 2 m / sec total distance covered = 495 + 240 = 735 m required time = 700 * 2 / 35 = 42 sec answer : d"
divide(495, multiply(subtract(63, 240), const_0_2778))