a train running at the speed of 45 km / hr crosses a pole in 16 seconds . find the length of the train .
"speed = 45 * ( 5 / 18 ) m / sec = 25 / 2 m / sec length of train ( distance ) = speed * time ( 25 / 2 ) * 16 = 200 meter answer : a"
multiply(divide(multiply(45, const_1000), const_3600), 16)