Exercise 14-07 National Express reports the following costs and expenses in June 2020 for its delivery service. Indirect materials $7,100 Drivers' salaries $16,200 Depreciation on delivery equipment 12,300 Advertising 5,400 Dispatcher's salary 5,260 Delivery equipment repairs 390 Property taxes on office building 910 Office supplies CEO's salary 13,000 Office utilities 1,060 Gas and oil for delivery trucks 2,600 Repairs on office equipment 220 720 Determine the total amount of (a) delivery service (product) costs and (b) period costs. Delivery service (product) costs Period costs