Aerotron electronics is considering the purchase of a water filtration system to assist in circuit board manufacturing. the system costs $70,000. it has an expected life of 7 years at which time its salvage value will be $7,500. operating and maintenance expenses are estimated to be $7,000 per year. if the filtration system is not purchased, aerotron electronics will have to pay bay city $44,000 per year for water purification. if the system is purchased, no water purification from bay city will be needed. aerotron electronics must borrow 1/2 of the purchase price, but they cannot start repaying the loan for 2 years. the bank has agreed to 3 equal annual payments, with the 1st payment due at the end of year 2. the loan interest rate is 8% compounded annually. aerotron electronics, marr is 10% compounded annually. click here to access the tvm factor table calculator what is the annual worth of this investment? $ carry all interim calculations to 5 decimal places and then round your final answer to the nearest dollar. the tolerance is ±10. what is the decision rule for judging the attractiveness of investments based on annual worth? should aerotron electronics buy the water filtration system?