Please show work... preferably not through excel but anything is fine.

22. Eagle's Last Stop BBQ" restaurant recently opened a drive-thru along highway I in-between Statesboro and Alma. Steve, longtime resident of the area and drive-thru manager is concerned that their current procedure for filling orders is not as efficient as required to satisfy the lunch hour rush on Tuesday's. Based on the following table of information answer the following questions. Assume operations are for only 1 hour unless otherwise stated. Round answers to the nearest tenth -- unless it is appropriate to use whole numbers. STEP TIME IMMEDIATE (seconds) PREDECESSORS A. Take order. 25 B. Collect money at window. 20 C. Gather drinks. D. Gather food. 32 E. Put drinks and food in a bag. CD F. Give the order to the customer. 20 BE 40 A A A 16 A. Assuming no more than I worker per step, what is the maximum capacity of this process in units/hour? B. If Steve needs to process 320 orders per 4 hour shift, how many employees will he need? C. What is the capacity (in customers/hour) of the system if tasks A and B were done by 1 employee, task C was done by 1 employee, tasks D and E were done by 1 employee and finally task F was done by 1 employee