52. Solving a chemistry problem

118. To 0.8 l of sodium hydroxide solution (ω \u003d 30%, ρ \u003d 1328 kg / m3) 0.4 l of sodium hydroxide solution was added, the mass fraction of NaOH in which is 14% (ρ \u003d 1153 kg / m3). Determine the density of the resulting solution and the mass fraction of NaOH in it.