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Scheduling Problem An airline reservations office is open to take reservations by telephone 24 hours per day, Monday through Friday. The number of reservation agents needed for each time period is shown below. A union contract requires that all employees work 8 consecutive hours. Time Period Number of Agents Needed 11 15 12am-4am 4am - 8am 8am-12pm 12pm - 4pm 4pm-8pm 31 17 25 8pm-12am 19 Question: How many reservation agents should work each 8-hour shift