The 1H-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.

\begin{tabular}{|l|c|c|c|c|c|c|} \hline/ppm & 1.75 & 2.0 & 2.20 & 2.5 & 2.7 & 4.9 \\ \hline Integration & 3.0 & 0.9 & 3.6 & 0.6 & 0.6 & 1.5 \\ \hline \end{tabular} \begin{tabular}{|l|c|c|c|c|c|c|} \hline/ppm & 1.75 & 2.0 & 2.20 & 2.5 & 2.7 & 4.9 \\ \hline Integration & 3.0 & 0.9 & 3.6 & 0.6 & 0.6 & 1.5 \\ \hline \end{tabular}