Crosshill Company's total overhead costs at various levels of activity are presented below. Machine-Hours Total Overhead Month April 70,000 May June July 60,000 80,000 90,000 Cost $205,000 $184,500 $225,500 $246,000 Assume that the overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 60,000-machine-hour level of activity in May is as follows: Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) Total overhead cost $ 52,000 21,000 110,700 $184,500 The company wants to break down the maintenance cost into its variable and fixed cost elements Required: 1. Estimate how much of the $246,000 of overhead cost in July was maintenance cost. (Hint: To do this, first determine how much of the $246,000 consisted of utilities and supervisory salaries. Think about the behaviour of variable and fixed costs within the relevant range.) (Round the "Variable cost per unit" to 2 decimal places.) Maintenance cost in July range) (Round the "Variable cost per unit" to 2 decimal places.) Maintenance cost in July 2. Using the high-low method, estimate a cost formula for maintenance. (Round the "Variable cost per unit" to 2 decimal places.) High activity level Low activity level Change Variable cost element Foxed cost element Machine-Hours Maintenance Cost 0 $ 0 per MH 3. Express the company's total overhead cost in the form Y=a+bX (Round the "Variable cost per unit" to 2 decimal places.) Utilities cost Supervisory salaries cost Variable Cost per Machine-Hour Fixed Cost Maintenance cost Total overhead cost $ 0.00 $ 4. What total overhead cost would you expect to be incurred at an activity level of 75,000 machine-hours? (Round the "Variable cost per unit" to 2 decimal places.) Total overhead cost