Alden Company's monthly data for the past year follow. Management wants to use these data to predict future variable and fixed costs. \begin{tabular}{|l|l|l|l|} \hline \multicolumn{2}{|c|}{ High-Low mothod - Calculation of variable cost per unit } \\ \hline \multicolumn{1}{|c|}{ Cost at highest volume - Cost at lowest volume } & \multicolumn{2}{|c|}{48,100} & \\ \hline \multicolumn{1}{|c|}{ Highest volume - Lowest volume } & High-Low mothod - Calculation of fixed costs \\ \hline Total cost at the highest volume & & \\ \hline Variable costs at highest volume: & & \\ \hline Highost volume & & \\ \hline Variable cost per unit & & \\ \hline Total variable costs at highest volume & & \\ \hline Total fixed costs & & \\ \hline Total cost at the lowest volume & & \\ \hline Variable costs at lowest volume: & & \\ \hline \multicolumn{1}{|c|}{ Lowest volume } & & \\ \hline Variable cost per unit & & \\ \hline Total variable costs at lowost volume & & \\ \hline Total fixed costs & & \\ \hline \end{tabular} 2. Predict future total costs when sales volume is (a) 384,000 units and (b) 424,000 units