7. McBride Caribbean Ltd provided the following information regarding its first year of operations: Administrative salaries Factory depreciation Indirect materials Marketing expenses Factory supervision salaries Direct labor Direct materials used Research and development costs Factory building rent Sales revenues Sales staff salaries Headquarters building rent Selling expenses $70 000 20 000 5000 45 000 36 000 100 000 120 000 32 000 60 000 532 000 56 000 24 000 9000 Required: Calculate a) Total overhead costs. b) Total product costs c) Total period costs 14 marks] [3 marks 16 marks 8. What effect does an increase in volume have on the following? a. Unit fixed costs? b. Unit variable costs? c. Total fixed costs? d. Total variable costs? 14 marks