please explain how to plug tgis question into excel thanks

Bama Tide inc. typically uses debtas their main source of funding and typically only finances with 30% equity. The firm's before-tax cost of debt has been estimated to be 6% while their before-tax cost of equity is estimated at 10%. If the firm faces a 40% tax rate. what is their WACC? KAT=KBT(1T).WACC=wiki \begin{tabular}{|c|c|} \hline \multicolumn{2}{|c|}{ WACC \#2 } \\ \hline State & Input \\ \hline Tax & \\ \hline Wd & \\ \hline Ws & \\ \hline Kd & \\ \hline Ks & \\ \hline Answer & \\ \hline \end{tabular}