how many seconds will a train 100 meters long take to cross a bridge 180 meters long if the speed of the train is 36 kmph ?
"explanation : d = 100 + 180 = 280 s = 36 * 5 / 18 = 10 mps t = 280 / 10 = 28 sec answer : option c"
divide(add(180, 100), multiply(36, const_0_2778))