I: The plant man s The following data pertains to activity and costs for two months Junc J July Activity level in units 10,000 12,000 Direct materials Fixed factory rent $16,000 S 12, Total cost $42.90 Asuming that these activity levels are within the relevant range, Compute the amount of manufacturing overhead for July. Answer At an activity level of 4,000 machine-hours in a month, Curt Corporation's total variable production enginecring cost is $154,200 and its total fixed production engineering cost is $129,000. What would be the total production engineering cost per unit, both fixed and variable, at an activity level of 4,300 machine-hours in a month? Assume that this level of activity is within the relevant range