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QS 18-3 Cost behavior estimation-high-low method LO P1 The following information is available for a company's maintenance cost over the last seven months. June July August September October November December ntenance Hours Maintenance $5,450 6,900 5, 100 6,000 6,900 8,100 3,600 18 12 15 21 24 g the high-low method, estimate both the fixed and variable components of its maintenance cost High-Low method-Calculation of variable cost per maintenance hour Change in cost Change in volume Cost at high point minus.cost at low point Volume at high point minus volume at low point Total cost at the high point Variable costs at the high point Volume at the high point Variable cost per maintenance hour 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 per maintenance hour Total variable costs at the low point Total fixed costs