Bruin Manufacturing is evaluating whether it should retain its current environmental test chamber and room or sell it immediately and purchase a new one.The relevant costs are shown below.The current one can be kept for another 5years, given that an additional maintenance cost of$750 each year is provided each year.Determine whether the current equipment should be replaced.Use a before-tax MARR of12% per year and the annual cost method. a) What is the defender's economic life?b) What is the defender's minimum EUAC?c) What is the challenger's economic life?d) What is the challenger's minimum EUAC?e) Should you replace the current equipment?

Defender Capital investment, $3 years ago Capital investment, Annual operating expenses, S Annual maintenance Current market value Estimated salvage value at the end of 5 additional years Challenger 33,000 IS 38,000 5,250 5,450 250 13,000 1,500 23,000 Defender Capital investment, $3 years ago Capital investment, Annual operating expenses, S Annual maintenance Current market value Estimated salvage value at the end of 5 additional years Challenger 33,000 IS 38,000 5,250 5,450 250 13,000 1,500 23,000