Problem 3: Replacement and Retention Decisions (Chapter 9 - Section9.1, 9.2, 9.3, and 9.4) - 10-points. As plant supervisor, you're considering replacing an existing production machine if the vendor of the replacement machine offers a suitable trade-in offer. The cost data for the machines is: Market value. S Annual Operating cost, $/year Defender 2222 $60,000 Challenger -$80,000 -$40,000 increasing by $2,000 per year thereafter $20,000 5 Salvage Value S Life, years $15,000 3 At an i = 8%, what trade-in value (market value) for the Defender will make the purchase of the Challenger attractive? The company uses an interest rate of 8-percent