Echeverria SA is an Argentinian manufacturing company whose total factory overhead costs fluc- tuate somewhat from year to year according to the number of machine-hours worked in its produc- tion facility. These costs (in Argentinian pesos) at high and low levels of activity over recent years are given below: Level of Activity Low High 60,000 80,000 Machine-hours. Total factory overhead costs. 274,000 pesos 312,000 pesos The factory overhead costs above consist of indirect materials, rent, and maintenance. The com- pany has analyzed these costs at the 60,000 machine-hours level of activity as follows: Indirect materials (variable) 90,000 pesos Rent (fixed) 130,000 Maintenance (mixed) 54,000 Total factory overhead costs 274,000 pesos Managerial Accounting and Cost Concepts For planning purposes, the company wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. 2. 3. Estimate how much of the factory overhead cost of 312,000 pesos at the high level of activity consists of maintenance cost. (Hint: To do this, it may be helpful to first determine how much of the 312,000 pesos cost consists of indirect materials and rent. Think about the behavior of variable and fixed costs.) Using the high-low method, estimate a cost formula for maintenance. What total overhead costs would you expect the company to incur at an operating level of 65,000 machine-hours?