Can you please show how you solve for this in excel?

Chapter 11 A Job at East Coast Yachts, Part 2 Input area: \begin{tabular}{|c|c|c|} \hline & 10-year annual & Standard deviation \\ \hline Bledsoe Large Company Stock Fund & 12.15% & 24.43% \\ \hline Bledsoe Bond Fund & 6.93% & 9.96% \\ \hline Risk-free rate & 3.20% & \\ \hline Correlation & 0.15 & \\ \hline \end{tabular} \begin{tabular}{|c|c|c|} \hline Weight of stock fund & Portfolio E(R) & \begin{tabular}{c} Portfolio standard \\ deviation \end{tabular} \\ \hline 0% & 6.93% & \\ \hline \multirow{2}{*}{\begin{tabular}{l} 10% \\ 20% \end{tabular}} & 7.45% & \\ \hline & 7.97% & \\ \hline 30% & 8.50% & \\ \hline 40% & 9.02% & \\ \hline \multirow{2}{*}{\begin{tabular}{l} 50% \\ 60% \end{tabular}} & 9.54% & \\ \hline & 10.06% & \\ \hline 70% & 10.58% & \\ \hline 80% & 11.11% & \\ \hline \multirow{2}{*}{\begin{tabular}{l} 90% \\ 100% \end{tabular}} & 11.63% & \\ \hline & 12.15% & \\ \hline \end{tabular}