The following information is available for a company's maintenance cost over the last seven months. Using the high-low method, estimate both the fixed and variable components of its maintenance cost. \begin{tabular}{|l|l|l|} \hline \multicolumn{2}{|c|}{ High-Low method - Calculation of variable cost per unit produced } \\ \hline Total cost at the highest volume & & \\ \hline Variable costs at highest volume: & & \\ \hline Highest volume & & \\ \hline Variable cost per unit produced & & \\ \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 Lowest volume & & \\ \hline Variable cost per unit produced & & \\ \hline Total variable costs at lowest volume & & \\ \hline Total fixed costs & & \\ \hline \end{tabular}