a train running at the speed of 90 km / hr crosses a pole in 6 seconds . what is the length of the train ?
"speed = ( 90 * 5 / 18 ) m / sec = ( 25 ) m / sec length of the train = ( speed x time ) = ( 25 * 9 ) m = 225 m . answer : d"
multiply(divide(multiply(90, const_1000), const_3600), 6)