a train is 360 meter long is running at a speed of 60 km / hour . in what time will it pass a bridge of 140 meter length ?
"speed = 60 km / hr = 60 * ( 5 / 18 ) m / sec = 50 / 3 m / sec total distance = 360 + 140 = 500 meter time = distance / speed = 500 * ( 3 / 50 ) = 30 seconds answer : d"
divide(add(360, 140), divide(multiply(60, const_1000), const_3600))