how long does a train 130 m long running at the speed of 98 km / hr takes to cross a bridge 160 m length ?
"speed = 98 * 5 / 18 = 27 m / sec total distance covered = 130 + 160 = 290 m . required time = 290 / 22 = 13.1 sec . answer : b"
divide(add(130, 160), multiply(98, const_0_2778))