Exercise 19-07 National Express reports the following costs and expenses in June 2020 for its delivery service. Indirect materials Depreciation on delivery equipment Dispatcher's salary Property taxes on office building CEO's salary Gas and oil for delivery trucks $7,100 Drivers' salaries $16,500 5,300 440 690 1,050 270 11,600 Advertising 5,610 Delivery equipment repairs 970 Office supplies 12,900 Office utilities 3,100 Repairs on office equipment Determine the total amount of (a) delivery service (product) costs and (b) period costs. Delivery service (product) costs Period costs