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Joe's Java has three different workstations: one for drip coffee, one for espresso

drinks, and one to prepare food. During the morning rush, Joe has 5 people working: one person at the drip coffee station, two at the espresso station, and two at the food prep station. These employees are not cross trained, and thus must stay at their station.

 On average, it takes the person at the drip coffee station 1 minute to make the coffee. On average, it takes one person working at the espresso station 3 minutes to make one espresso drink. On average, it takes one person working at the food station 4.5 minutes to prepare the food for one customer.

 The customer mix is as follows. 10% order just a drip coffee, 30% order a drip coffee and food, 35% order just an espresso drink, and 25% order an espresso drink plus food. 

 Given the customer mix stated above, how many customers/ hour can Joe's Java station take care of? Round down to the nearest integer.

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