how long does a train 110 m long running at the speed of 54 km / hr takes to cross a bridge 132 m length ?
"speed = 54 * 5 / 18 = 15 m / sec total distance covered = 110 + 132 = 242 m . required time = 242 / 15 = 16.13 sec . answer : d"
divide(add(110, 132), multiply(54, const_0_2778))