Determine the approximate density of a high$-$leaded brass that has a composition of $62\mathrm{.}5wt\%Cu,30\mathrm{.}5wt\%Zn,$ and $7\mathrm{.}0wt\%Pb.$ The densities of $Cu,Zn,$ and $Pb$ are $8\mathrm{.}94,7\mathrm{.}13$ and $11\mathrm{.}35\frac{g}{c}{m}^3,$ respectively.