You need to decide if you make or buy subassemblies for your airplane manufacturing company. You are given the following information: Assume a MARR of 12% If you purchase the subassembly it would be $12,000/part To make the sub-assembly in-house, initial cost would be $2,000,000 Annual cost would be $10,000 At the end of 10 years, you would get $20,000 in salvage