a 75 m long train is running at 54 km / hr . in how much time will it cross an electric pole ?
speed of the train = ( 54 * 5 / 18 ) m / sec = 15 m / sec . length of the train = ( speed x time ) time = ( length of the train / speed ) = ( 75 / 15 ) = 5 sec answer : a
divide(75, divide(multiply(54, const_1000), const_3600))