A H ... QUESTION 3 3.1 The standard time for producing 260 articles is 75 hours. The rate of wages is R3.00 per hour. The actual time taken for producing 260 articles is 65 hours. What are the earnings of the worker under the Rowan plan? (9) 3.2 A stamping plant supplies sheet metal parts to a final assembly plant in the automotive industry. The following data are values representative of the parts made at the plant. Annual demand is 100,000 pc (for each part produced). FEW2601/2022 Average cost per piece is R20 and holding cost is 20% of piece cost. Changeover (setup) time for the presses is 5 hr and the cost of downtime on any given press is R210/hr. Determine (a) The economic batch size and (4) (b) The total annual inventory cost for the data. (4) If the changeover time for the presses could be reduced to 10 min, Determine (c) The economic batch size and (d) The total annual inventory cost. ||| (4) (4) [25] Totals Marks = [81]