Device A costs $25,000 and has a salvage value of $5000 at the end of its useful

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Device A costs $25,000 and has a salvage value of $5000 at the end of its useful life of 8 years. Operating costs are $2,000 in the first year and estimated to go up by $1,000 per year over the life of the device. Benefits in the first year are estimated to be $22,000 and are expected to go down by $1,000 per year over its 8 year life. Device B costs $45,000 and has a salvage value of $9,000 at the end of its useful life of 4 years. A new Device B purchased in four years' time will cost $54,000 and have a salvage value of $10,800 at the end of its useful life. Operating expenses are $3,500 in the first year and estimated to go up by $1,000 per year over the life of the device. Benefits in the first year are estimated to be $27,000 and are expected to go down by $1,000 per year over its 8 year life. What is the difference in the EUAW of Device A and B over an 8 year project life if the interest rate is 6% per year compounded yearly