a train running at the speed of 30 km / hr crosses a pole in 24 seconds . what is the length of the train ?
"speed = ( 30 * 5 / 18 ) m / sec = ( 25 / 3 ) m / sec length of the train = ( speed x time ) = ( 25 / 3 * 24 ) m = 200 m . answer : a"
multiply(divide(multiply(30, const_1000), const_3600), 24)