county wants to build one centrally$-$located processing facility to serve the county's four recycling drop$-$off locations. The four drop$-$offs have characteristics as given in the table below. What is the approximate centre of gravity of these four locations?$6,4\mathrm{.}254\mathrm{.}75,6\mathrm{.}0417,2433\mathrm{.}5,135\mathrm{.}4$