\(\frac{95}{100} \mathrm{IS}=\frac{5 \mathrm{I}}{100} \mathrm{G}\)
\(\mathrm{S}=\frac{\mathrm{G}}{19}\)
\(\mathrm{R}_{\mathrm{A}}=\frac{\mathrm{SG}}{\mathrm{S}+\mathrm{G}}=\frac{\frac{\mathrm{G}^2}{19}}{\frac{20 \mathrm{G}}{19}}\)
\(\mathrm{R}_{\mathrm{A}}=\frac{\mathrm{G}}{20}\)