When Ajax co. Produced 3 units of output per week, its total fixed cost was $100 and total variable cost was $45. When output increased to 4 units per week, total fixed cost remained at $100 and total variable cost increased to $65.

When output was 4 units per week, total cost was $___.

When output was 4 units per week, average variable cost was $___.

When output was 4 units per week, average fixed cost was $___.

When output was 4 units per week, average total cost was $___.

The marginal cost of producing the fourth unit was $___.

Please round answers to two decimal places.