Mama\'s Pizza purchases its delivery boxes from a local supplier with a lead tim
ID: 361731 • Letter: M
Question
Mama's Pizza purchases its delivery boxes from a local supplier with a lead time of one week (7 days). Boxes cost 20 cents each, and each order costs $10 to process. On average, Mama's delivers 200 pizzas each month and is open 360 days per year. Inventory holding is charged at 30% of the box cost. Determine... a the economic order quantity (nearest whole number) b. the reorder point including safety stock (nearest whole number) c. number of orders per year (1 decimal) d total annual cost including safety stock (nearest dollar) e. If the manager of Mama's Pizza decides to order 200 boxes each month, how much more does this purchasing plan cost than ordering the optimal quantity? (nearest dollar) The pizza-making process at Mama's is outlined in the table below. The shop is open 8 hours a day to fulfill a typical daily demand of 40 pizzas. Sketch the process and balance the assembly to answer the questions below Predecessor Minutes A. Roll dough B. Spread sauce C. Prepare toppings - D. Put toppings on pizza B,C E. Sprinkle cheese F. Bake pizza/wash dishes E a. What is the maximum cycle time? b. What is the theoretical minimum number of workstations? (round appropriately) c. How many workers (actual workstations) are needed? d. What is the theoretical efficiency? (nearest whole number) e. What is the operational efficiency? (nearest whole number)Explanation / Answer
Task Time Pre ES EF TCT Total cycle time 19 A 2 None 0 2 TU Total unit 40 B 1 A 2 3 TA Time available 480 Min C 4 0 4 TC= (TA/TU) Target cycle time 12 Min Ans A D 1 B,C 4 5 TCT/TC Min Workstation 1.583 2 Workstations Ans B E 1 D 5 6 Idle time 53.000 Min F 10 E 6 16 TCT/(10*6) Op Efficiency 31.67% Ans E Total cycle time 19 TCT/(10*2) Th Efficiency 95.00% Ans D Workstations 1 A 10 2 B 11 3 C 8 4 D 11 5 E 11 6 F 2 Ans C No of workers 6 53 Idle time
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