Current Attempt in Progress Marin Express reports the following costs and expenses in June 2022 for its delivery service. Indirect materials used $6,810 Drivers' salaries $16,960 Depreciation on delivery equipment 11,820 Advertising 4,980 Dispatcher's salary 5,300 Delivery equipment repairs 318 Property taxes on office building 960 Office supplies 689 CEO's salary 12,720 Office utilities 1,060 Gas and oil for delivery trucks 2,280 Repairs on office equipment 202 Determine the total amount of (a) delivery service (product) costs and (b) period costs. Delivery service (product) costs Period costs $