how much time does a train 150 metres long running at 90 km / hr take to pass a pole ?
"explanation : 90 km / hr = 90 * 5 / 18 = 25 m / s speed = distance / time ; v = d / t 25 = 150 / t t = 6 s answer : b"
multiply(divide(divide(150, const_1000), 90), const_3600)