Determine the total amount of (a) delivery service (product) costs and (b) period costs. Delivery service (product) costs Period costs $ $ Indirect materials used Depreciation on delivery equipment Dispatcher's salary Property taxes on office building CEO's salary Gas and oil for delivery trucks $6,940 12,040 Advertising 5,400 980 12,960 Drivers' salaries 2,320 Delivery equipment repairs Office supplies Office utilities Repairs on office equipment $17,280 5,080 324 702 1,080 206