(b) Table Q3(b) shows the process sequence in the production line and its related direct time study data for a factory focusing on assembly of portable air conditioner. The process sequence needs to follow the specific route of A, B, C and D. The worker at task A was rated with 105%, the worker at task B was rated with 90% and the worker at task C was rated with 85%. Task D run in full automatic mode. The standard allowances accepted by the company are 5% for fatigue, 6% for personal, and 3% for delay. The normal operating period is 9 hours per day and 20 days per month. Analyse the given information and determine the standard time for the product. (7 marks) Table Q3(b): Average Processing Time (minute) Task Processing Time 28 A B 45 27 D 15 (c) The assembly of multiple level wooden book shelves is done purely using manual assembly process. The standard time for the product is 42 min per unit. The company is currently employing 11 workers and having a working period of 9 hours per day with 20 days per month. The company is planning to produce 3100 units of output per month. The arrangement of overtime in the company is limited to only 15 days per month. Evaluate the situation and propose the number of operators that must be arranged to perform the overtime work daily in order to meet the production output. The overtime is executed 3 hours every day over the 15 days period. (8 marks)