Jack is considering operating the warehouse during weekends. The benefit of this option is that the total number of orders can be spread out into seven days period instead of five days period. So the number of orders that need to be processed each day is less and Jack can hire fewer workers each day. The downside is the workers who work on weekends need to be paid 1.5 times. Table 3 summarizes how many orders per hour arrive in the different time intervals if Jack operates the warehouse on weekends.

Table 3: Order Arrival Information if warehouse operates on weekends

Time	8 - 10 am	10 - 12 pm	12 -2 pm	2 - 4 pm	4 - 6 pm	6 - 8 pm
Order/Hour	21	39	43	72	40	36

Q6. Similarly, Jack decided that the waiting time in the queue should not be longer than 3 minutes. What is the minimum number of workers required for each time interval?