1 g of a non-volatile non-electrolyte solute is dissolved in 100 g of two different solvents A and B whose ebulliscopic constants are in the ratio of 1:5. The ratio of the elevation in their boiling points, $\frac{\Delta {\mathrm{T}}_{\mathrm{b}}\left(\mathrm{A}\right)}{\Delta {\mathrm{T}}_{\mathrm{b}}\left(\mathrm{B}\right)}$, is