Lamar Edwards caught the flu and needed to see the doctor. Edwards called to set

Question

Lamar Edwards caught the flu and needed to see the doctor. Edwards called to set up an appointment and was told to come in at 1:00 P.M. Edwards arrived at the doctor's office promptly at 1:00 P.M. The waiting room had 5 other people in it. Patients were admitted from the waiting room in FIFO (first-in, first-out) order at a rate of 6 minutes per patient. After waiting until his turn, a nurse finally invited Edwards to an examining room. Once in the examining room, Edwards waited another 15 minutes before a nurse arrived to take some basic readings (temperature, blood pressure). The nurse needed 10 minutes to collect this clinical information. After the nurse left, Edwards waited 20 additional minutes before the doctor arrived. The doctor diagnosed the flu and provided a prescription for antibiotics, which took 15 minutes. Before leaving the doctor's office, Edwards waited 10 minutes at the business office to pay for the office visit. Edwards spent 5 minutes walking next door to fill the prescription at the pharmacy. There were six people in front of Edwards, each person requiring 5 minutes to fill and purchase a prescription. Edwards arrived home 15 minutes after paying for his prescription. a. What time does Edwards arrive home? b. How much of the total elapsed time from 1:00 P.M. until when Edwards arrived home was non-value-added time? Total elapsed time minutes Non-value-added time minutes c. What is the value-added ratio? Round to the nearest whole percent. 2 %

Explanation / Answer

Elapsed Time Activity Value added Time (min) Non Value added Time (min) 1:00 PM Arrive at Doctor Office 1:30 Waits in Waiting room (5*6 min) 30 1:45 Waits in Examining Room 15 1:55 nurse takes reading 10 2:15 Waits in Examining Room 20 2:30 Dcotor performds diagonionis 15 2:40 Wait to pay for services 10 2:45 Walks to pharmacy 5 3:15 Waits to fill presciption (6*5 min) 30 3:20 Prescription is filled 5 3:35 Drives Home 15 Total 50 105 Edward Arrives Home at 3:35 pm Ans b Out of total elapsed time of 155 min.Non value added time was 105 min Ans c Value Added Ratio=Value added lead time/Total Lead Time= 50/155*100 32 %

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