how long does a train 110 m long running at the speed of 90 km / hr takes to cross a bridge 132 m length ?
"speed = 90 * 5 / 18 = 25 m / sec total distance covered = 110 + 132 = 242 m . required time = 242 / 25 = 9.68 sec . answer : b"
divide(add(110, 132), multiply(90, const_0_2778))