Chemical Kinetics

For a given reaction, ,\(\mathrm{X}(\mathrm{g})+\mathrm{Y}(\mathrm{g} \rightarrow \mathrm{Z}(\mathrm{g})\), the order of reaction with respect to \(\mathrm{X}\) and \(\mathrm{Y}\) are \(\mathrm{m}\) and \(\mathrm{n}\) respectively. If the concentration of \(\mathrm{X}\) is tripled and that of \(\mathrm{Y}\) is decreased to one third, what is the ratio between the new rate to the original rate of the reaction?