how long does a train 110 m long running at a speed of 72 kmph take to cross a bridge 132 m in length ?
"72 km / hr = 72 * 5 / 18 m / sec = 20 m / sec time = d / s = 110 + 132 / 20 = 242 / 20 = 12.1 sec answer : b"
divide(add(110, 132), multiply(72, const_0_2778))