The ${?}^{1}H-NMR$ spectrum of a copolymers is given below. The table gives chemical shift $()$ and integration values of the corresponding peaks. Determine the percent composition of each monomer unit.

$\backslash$table$[[\frac{}{p}pm,1\mathrm{.}75,2\mathrm{.}0,2\mathrm{.}20,2\mathrm{.}5,2\mathrm{.}7,4\mathrm{.}9],[$Integration$,3\mathrm{.}0,0\mathrm{.}9,3\mathrm{.}6,0\mathrm{.}6,0\mathrm{.}6,1\mathrm{.}5]]$