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Problem 8 Question Help Up, Up, and Away is a producer of kites and wind socks. Relevant data on the bottleneck operation in the shop for the upcoming fiscal year are given in the following table: Item Demand forecast Lot size Standard processing time Standard setup time Kites 30,000 units/year 15 units 0.3 hour/unit 3.0 hours/lot Wind Socks 15,000 units/year 70 units 1.0 hour/unit 4.0 hours/lot The shop works two shifts per day, 8 hours per shift, 190 days per year. Currently, the company operates four machines, and desires a 25 percent capacity cushion. How many machines should be purchased to meet the upcoming year's demand without resorting to any short-term capacity solutions? The number of additional machines required is (Enter your response rounded up to the next whole number.)