Three small masses are positioned as follows: $2\mathrm{.}0kg$ at $(0\mathrm{.}0m,0\mathrm{.}0m),2\mathrm{.}0kg$ at $(2\mathrm{.}0m,0\mathrm{.}0m),$ and $4\mathrm{.}0kg$ at $(2\mathrm{.}0m,1\mathrm{.}0m).$ Determine the coordinates of the center of mass $($or center of gravity$)$ of this system.

$(1\mathrm{.}5m,0\mathrm{.}50m)$

$(2\mathrm{.}5m,0\mathrm{.}50m)$

$(2\mathrm{.}5$ m$,1\mathrm{.}5m)$

$(0\mathrm{.}50m,1\mathrm{.}5m)$