The boiling point of water in a 0.1 molal silver nitrate solution (solution A) is x ${}^\circ$ C. To this solution A, an equal volume of 0.1 molal aqueous barium chloride solution is added to make a new solution B. The difference in the boiling points of water in the two solutions A and B is y $\times$ 10 $-$ 2 ${}^\circ$ C. (Assume : Densities of the solutions A and B are the same as that of water and the soluble salts dissociate completely. Use : Molal elevation constant (Ebullioscopic Constant), Kb = 0.5 K kg mol $-$ 1; Boiling point of pure water as 100 ${}^\circ$ C.)The value of | y | is $\underline{\hspace{2cm}}$.