25ml of a mixture of $\mathrm{NaOH}\mathrm{and}{\mathrm{Na}}_2{\mathrm{CO}}_3$ when titrated with N/10 HCl using phenolphthalein indicator required 25ml HCl. The same volume of mixture when titrated with N/10 HCl using methyl orange indicator required 30ml of HCl. The total weight (in g) of ${\mathrm{Na}}_2{\mathrm{CO}}_3\mathrm{and}\mathrm{NaOH}$ in one litre of this mixture is (At.wt.of Na is 23, Oxygen is 16, Carbon is 12, Hydrogen is 1)