if the numerator of a fraction is increased by 50 % and denominator by 20 % , the fraction become 9 / 15 . what was the original fraction ?
"explanation : let the fraction be x / y we have 150 x / 120 y = 9 / 15 = x / y = 12 / 25 answer : option a"
divide(divide(9, 15), divide(divide(add(50, const_100), const_100), divide(subtract(const_100, 20), const_100)))