a train running at the speed of 90 km / hr crosses a pole in 15 seconds . what is the length of the train ?
"speed = ( 90 x ( 5 / 18 ) m / sec = ( 25 ) m / sec . length of the train = ( speed x time ) . length of the train = ( ( 25 ) x 15 ) m = 375 m c"
multiply(divide(multiply(90, const_1000), const_3600), 15)