a train is 360 meter long is running at a speed of 36 km / hour . in what time will it pass a bridge of 140 meter length ?
"speed = 36 km / hr = 36 * ( 5 / 18 ) m / sec = 10 m / sec total distance = 360 + 140 = 500 meter time = distance / speed = 500 * ( 1 / 10 ) = 50 seconds answer : a"
divide(add(360, 140), divide(multiply(36, const_1000), const_3600))