I cant seem to recreate this problem. Especially the EUAC calculations. I've seen a few examples and no explanation of how the calculation is done.

Please show all work. Thank you very much.

Problem 9-7 (book/static) EQuestion Help Question Help A high-speed electronic assembly machine was purchased two years ago for $50,000. At the present time, it can be sold for $25,000 and replaced by a newer model having a purchase price of $42,500, or it can be kept in service for a maximum of one more year. The new assembly machine, if purchased, has a useful life of not more than two years if the before-tax MARR is 15%, when should the old assembly machine be replaced? Use the following data table for your analysis. Challenger Defender Market Value O&M Costs Year Market Value O&M Costs $42,500 31,000 25,000 $10,000 12,500 $25,000 17,000 $14,000 2 Click the icon to view the interest and annuity table for discrete compounding when the MARR is 15% per year. The minimum EUAC value of the challenger is s 25678 (Round to the nearest dollar) The marginal cost of keeping the defender in service for one more year is s 25750 (Round to the nearest dollar) The old assembly machine should be replaced immediately Problem 9-7 (book/static) EQuestion Help Question Help A high-speed electronic assembly machine was purchased two years ago for $50,000. At the present time, it can be sold for $25,000 and replaced by a newer model having a purchase price of $42,500, or it can be kept in service for a maximum of one more year. The new assembly machine, if purchased, has a useful life of not more than two years if the before-tax MARR is 15%, when should the old assembly machine be replaced? Use the following data table for your analysis. Challenger Defender Market Value O&M Costs Year Market Value O&M Costs $42,500 31,000 25,000 $10,000 12,500 $25,000 17,000 $14,000 2 Click the icon to view the interest and annuity table for discrete compounding when the MARR is 15% per year. The minimum EUAC value of the challenger is s 25678 (Round to the nearest dollar) The marginal cost of keeping the defender in service for one more year is s 25750 (Round to the nearest dollar) The old assembly machine should be replaced immediately