When Ajax Co. produced 3 units of output per week, its total xed cost was $150 and total variable cost was $50. When output increased to 4 units per week, total xed cost remained at $150 and total variable cost increased to $65. When output was 4 units per week, total cost was $ . (Enter your response as an integer.) When output was 4 units per week, average variable cost was $ . (Enter your response as a real number rounded to two decimal places.) When output was 4 units per week, average fixed cost was $ . (Enter your response as a real number rounded to two decimal places.) When output was 4 units per week, average total cost was $ . (Enter your response as a real number rounded to two decimal places.) The marginal cost of producing the fourth units was $ . (Enter your response as a real number rounded to two decimal places.)