1 Total time for all work-elements at the certain assembly line is 7,8 minustes. The average stopped time (break down time) is 5%, the required production rate is 80 items per hour. a) Determine the minimum theory number of workstations to optimize total wastes time. [11 Ws] b) Determine percentage of balance loss L%. [5,45%] 2 A certain electronic appliance that have total processing time for all work- elements is 9,2 minutes. The acctual required volume is 80 items/hour (actual productivity). The current operational information as follow: an 8- hour shift per day, however, the actual operating time 6 hours, and the rest time for stopping and waste. a) Determine the minimum theory number of workstations to optimize total wastes time. b) Determine percentage of balance loss L%. 3 The certain items are manually produced with 10 workers in line, the hourly cost is 7,000 VN per person, the operating time is 8 hours per shift, 6 shifts per week, and 51 weeks per year. The total processing time to complete this item is 3.1 minutes. A production line designed request is released to meet a certain demand 85 units per hour (round up to 2 decimal). a) Determine the cycle time TC for this item? b) Determine the minimum theory number of workstations to optimize total wastes time. c) Suppose that the new line is designed and balanced with 5 stations. This new line is optimal solution or not? Why?. Do you think you can improve this new line by reducing number of stations? d) Determine percentage of balance loss L% (with 5 stations in question c). e) Suppose that the new line is designed and balanced with 6 stations, and each station is run by one worker. Determine the yearly benefit of the designed line