1. Consider a production line with five stations. Station 1 can produce a unit in 10 minutes. Station 2 can produce a unit in 9 minutes. Station 3 has two identical machines, each of which can process a unit in 14 minutes (each unit only needs to be processed on one of the two machines. Station 4 can produce a unit in 5 minutes. Station 5 can produce a unit in 8 minutes. Which station is the bottleneck station? (5p.)

2. A dentist is considering adding a second person to answer phone calls and make appointments. The cost of the person will be $20/hour and she will work 160 hours each month. If each new patient adds $500 of profit to the firm, how many patients must the person arrange for the dentist to break even? (5p.)