how many seconds will a train 100 meters long take to cross a bridge 150 meters long if the speed of the train is 63 kmph ?
"d = 100 + 150 = 250 s = 63 * 5 / 18 = 17.5 mps t = 250 / 17.5 = 14.3 sec answer : d"
divide(add(150, 100), multiply(63, const_0_2778))