Lead Time in a Doctor's Office

Marcus Simmons caught the flu and needed to see the doctor.Simmons called to set up an appointment and was told to come in at1:00 P.M. Simmons arrived at the doctor's office promptly at 1:00P.M. The waiting room had 5 other people in it. Patients wereadmitted from the waiting room in FIFO (first-in, first-out) orderat a rate of 5 minutes per patient. After waiting until his turn, anurse finally invited Simmons to an examining room. Once in theexamining room, Simmons waited another 5 minutes before a nursearrived to take some basic readings (temperature, blood pressure).The nurse needed 10 minutes to collect this clinical information.After the nurse left, Simmons waited 30 additional minutes beforethe doctor arrived. The doctor diagnosed the flu and provided aprescription for antibiotics, which took 5 minutes. Before leavingthe doctor's office, Simmons waited 10 minutes at the businessoffice to pay for the office visit.

Simmons spent 5 minutes walking next door to fill theprescription at the pharmacy. There were four people in front ofSimmons, each person requiring 5 minutes to fill and purchase aprescription. Simmons arrived home 15 minutes after paying for hisprescription.

a. What time does Simmons arrive home?
3:10 p.m.

b. How much of the total elapsed time from 1:00P.M. until when Simmons arrived home was non-value-added time?

Total elapsed time	minutes
Non-value-added time	minutes

c. What is the value-added ratio? Round yourpercent to one decimal place.
%

d. Which of the following statement is correct?
All of the above.