Module 3 HW Solutions [PDF]

Citation preview

Module 3 - Homework Solutions Chiemsee Knee Replacement Clinic CKRC1. Each of the 3 surgeons has 4 hours or 240 min available per day. Each patient takes 90 minutes of OR time (10 min preparation + 60 min procedure + 20 min clean-up). Therefore, each surgeon can see 240 min/90 min = 2.33 patients per day, which must be rounded down to 2 patients per day. The total # of patients who are seen per day is 2 patients/surgeon x 3 surgeons = 6 patients. CKRC2. OEE = (60 min value-add time/patient x 6 patients/day x 6 days/cycle) / (60 min/hr x 12 hr/day x 7 days/cycle) where each “cycle” = 7 days. Therefore OEE = 0.43.



Parsa Real Estate PR1. Capacity Revenue --------------------576 EBIT



Rev generating offices ----------8000 Yield



Load



10000 =2-0.02*6



0.8



6



264 Cost 312



---------------------- Monthly Maintenance =10*12 Variable Cost =12*2*8000/1000



120 192



ROIC 0.264 Capital ----------- Land 1000



1000



Answer: 0.264 PR2. New occupancy rate = 2 – 0.2 * 8 = 0.4 New revenue = $384,000 and new (fixed + variable) cost = $216,000. Therefore new EBIT = $168,000 and new ROIC = 0.168.



1



12 Tasks to 4 Workers 12T4W1. Worker



Task(s)



Activity Time (sec)



Capacity (units per hour)



1



1,2,3



70



51.43



2



4,5,6



55



65.45



3



7,8,9



85



42.35



4



10,11,12



60



60



Capacity = 1 / 85 sec = 42.35 units per hour 12T4W2. Direct labor content = (70+55+85+60) sec = 270 sec/unit or 4.5 min/unit 12T4W3. Demand = 20 units/min = 20 units/60 sec Takt time = 1/demand = 3 sec/unit 12T4W4. Target manpower = labor content/takt time = 270 sec/3 sec = 90 workers



2