Let the original fraction = $$frac{x}{y} Numerator after 350% increase = $$x + frac{350}{100} imes x = 4.5x$$ Denominator after 300 % increase = $$y + frac{300}{100} imes y = 4y$$ Acc to ques, => $$frac{4.5x}{4y} = frac{9}{22}$$ => $$frac{x}{y} = frac{9}{22} imes frac{4}{4.5}$$ => $$frac{x}{y} = frac{4}{11}$$