how long does a train 100 m long traveling at 54 kmph takes to cross a station of 250 m in length ?
"d = 100 + 245 = 345 m s = 54 * 5 / 18 = 15 t = 345 * 1 / 15 = 23 sec answer : d"
divide(add(100, 250), multiply(54, const_0_2778))