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1. Consider a walk-in dental clinic where patients check in, then see one of two hygienists for cleaning, followed by the dentist. On a busy day, 40 customers get cleaning and a visit by the dentist during the 8 hours of operation. The dentist also serves an average of 12 patients who need other procedures (these patients do not see the hygienist). The 12 patients are not included in the 40 who get both the cleaning and dentist. The average queue sizes are found to be 1.7 for the hygienists and 2.1 for the dentist. What are the average wait times for the hygienist's queue and for the dentist queue?
2. Consider a non-profit organization, where grant proposals are written by the business development director. The director, who devotes 100% of his time to the proposals, completes an average of 2.3 per month. On average, 4 RFP’s (requests for proposals) are waiting to be started. What is the average flow time for proposals?