Red Bottle Coffee is a small coffee shop in Pittsburgh that opens every day 7 am through 7 pm. The baristas use a Breville espresso machine to brew the coffee they sell to their patrons. The espresso machine is available all the time that the shop is open. On average, it takes 50 seconds to brew a cup of coffee. Baristas need another 20 seconds of preparation time before brewing a cup of coffee, and after it is brewed the machine must undergo some cleaning, what takes a barista 30 seconds to perform. Assume that, on an average day, 400 customers arrive uniformly throughout the time Red Bottle Coffee is open, and each of them buys one cup of coffee. 2. Question 2 What is the OEE of the espresso machine?