• # question_answer A certain part is produced in a batch size of 50 units and requires a sequence of 8 operations in the plant. The average set-up time and average non-operation time per operation are3 hours and 7 hours, respectively. The average operative time per machine per part is 6 minutes. What is the manufacturing lead time? A) 100 hours                     B) 120 hoursC) 150 hours                     D) 180 hours

Average set of time per operation = 3 hours Average non-operation time per operation = 7 hours. Number of operation = 8 Average operative time per machine per part = 6 min Batch size = 50 Lead time $8(3+7)+\frac{8\times 6\times 50}{60}$ $=80+40=120$hours.