Classify each of the following as being usually: Fixed Variable Semi-fixed Semi-variable (i) Direct labour Depreciation of machinery (iii) Factory rental (iv) Supplies and other indirect materials Advertising (vi) Maintenance of machinery (vii) Factory manager's salary (viii) Supervisory personnel (ix) Royalty payments From the following calculate the prime cost: Stock on materials on 1.6.2019 Purchase of materials Expenses in connection with purchases Direct materials returned to supplier Stock of direct materials on 31.5.2020 Manufacturing wages Royalty charges Rental of a special machinery for cutting materials RM 13,500 210,600 32,400 15,000 24,700 68,900 52,700 34,900