Required information (The following information applies to the questions displayed below.) Alden Co.'s monthly unit sales and total cost data for its operating activities of the past year follow. Management wants to use these data to predict future fixed and variable costs. Month Unita Sold Total Cost Month Units sold Total cost 1 320,000 $160,000 7 2 $220,000 340,000 160,000 100,000 8 280,000 160,000 3 280,000 220,000 9 80,000 64,000 4 200,000 100,000 10 160,000 140,000 5 300,000 230,000 11 100,000 100,000 6 200,000 120,000 12 110,000 80,000 1. Estimate both the variable costs per unit and the total monthly fixed costs using the high-low method. (Do not round intermediate calculations.) 0 Change in cost Change in volume High-Low method - Calculation of variable cost per unit Cost at high point minus cost at low.coint Volume at high point minus volume at low point High-Low method - Calculation of fixed costs Total cost at the high point Variable costs at the high point Volume at the high point Variable cost per unit Total variable costs at the high point Total fixed costs Total cost at the low point Variable costs at the low point: Volume at the low point: Variable cost por unit Total variable costs at the low point Total fixed costs