a train running at the speed of 70 km / hr crosses a pole in 9 sec . what is the length of the train ?
"speed = 70 * 5 / 18 = 175 / 9 m / sec length of the train = speed * time = 175 / 9 * 9 = 175 m answer : d"
multiply(divide(multiply(70, const_1000), const_3600), 9)