Two liquids of densities ${\rho }_1\&{\rho }_2$having volumes ${\text{V}}_{\text{1}}\&{\text{V}}_{\text{2}}$are mixed, then the density of mixture is

If the liquids of densities ${\rho }_1$and${\rho }_2$having volumes ${\text{v}}_{\text{1}}$and ${\text{v}}_{\text{2}}$are mixed ,

then the density of the mixture is

$\rho =\frac{{\text{m}}_{\text{1}}+{\text{m}}_{\text{2}}}{{\text{v}}_{\text{1}}+{\text{v}}_{\text{2}}}=\frac{{\rho }_1{v}_1+{\rho }_2{v}_2}{{\text{v}}_1+{\text{v}}_2}$