Ziegler Inc. has decided to use the high-low method to estimate the total cost and the fixed and variable cost components of the total cost. The data for various levels of production are as follows: Units Produced Total Costs 80,000 $25,100,000 92,000 27,206,000 120,000 32,120,000 a. Determine the variable cost per unit and the total fixed cost. Variable cost (Round to two decimal places.) $ Total fixed cost b. Based on part (a), estimate the total cost for 115,000 units of production. Der unit Total cost for 115,000 units