A high-speed electronic assembly machine was purchased two years ago for $50,000. At the present time, it can be sold for $23,000 and replaced by a newer model having a purchase price of $43,000; 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 20%, 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 $43,000 30,000 23,000 $10,000 13,000 $23,000 17,000 $14,500 Click the inn tn view the interest and annuit, tahle for discrete nmnnundina when the MARRIS 20% nerver The minimum EUAC value of the challenger is (Round to the nearest dollar.)