a train is 327 meter long is running at a speed of 40 km / hour . in what time will it pass a bridge of 122 meter length ?
"speed = 40 km / hr = 40 * ( 5 / 18 ) m / sec = 100 / 9 m / sec total distance = 327 + 122 = 449 meter time = distance / speed = 449 * ( 9 / 100 ) = 40.41 seconds . answer : d"
divide(add(327, 122), divide(multiply(40, const_1000), const_3600))