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A workstation produces two different products, X and Y

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A workstation produces two different products, X and Y. The following table gives the necessary information for each product. The plant operates 250 days per year, with two eight-hour shifts. Management believes that a capacity cushion of 13 percent is best.
ITEM Product X Product Y
Annual Demand Forecast (units) 3300 4200
Lot size (units) 30 70
Standard Processing Time (hr/unit) 5 8
Standard Setup Time (hr/lot) 4 7
What I'm looking for - (Q) How many machines are needed at the workstation?