Nova Company's total overhead cost at various levels of activity are presented below: Month Machine-Hours Total Overhead Cost April May June July 50,000 40,000 60,000 70,000 $204,300 $177,700 $230,900 $257,500 Assume that the total overhead cost above consists of utilities, supervisory salaries, and maintenance. The breakdown of these costs at the 40,000 machine-hour level of activity is: Utilities (variable) Supervisory salaries (fixed) Maintenance (mixed) 64,000 59,000 54,700 Total overhead cost $177,700 Nova Company's management wants to break down the maintenance cost into its variable and fixed cost elements. Required: 1. Estimate how much of the $257,500 of overhead cost in July was maintenance cost. (Hint: To do thi s, it may be helpful to first determine how much of the $257,500 consisted of utilities and supervisory salaries. Think about the behavior of variable and fixed costsl) (Do not round intermediate calculations.) aintenance cost in July