A student uses \(\text{X(g)}\) and \(\text{Y(g)}\), two nonreactive monatomic gases, as tracers in a leak-detection system. The graph shows normalized Maxwell-Boltzmann speed distributions for samples of the gases. All samples behave ideally.

Based on the graph, what is the value of the following ratio?
\[ \dfrac{u_{\mathrm{rms},\text{Y}}(600\ \text{K})}{u_{\mathrm{rms},\text{X}}(300\ \text{K})} \]