3 High-Low Method (20 marks) Selected data about Pitkin Company's manufacturing operations at two levels of activity are presented below: Number of Units Produced 10,000 15,000 Total Manufacturing Costs $157,000 $225,000 Direct Material Cost per Unit $4 $4 Direct Labour Cost per Unit $6 $6 Required: Using the high-low method, estimate the cost formula for manufacturing overhead. Assume that both direct material and direct labour are variable costs. Using your results, estimate the total manufacturing cost at a level of 12,000 units