a)

Mr. Asimov must replace the 15 robots on his assembly line. The Robo100 model costs $25802 per robot and they will last for three years. The EconoRobo model costs $10828 per robot and will last for two years. The Robo100 models will have an end of life salvage value of $9874 each. The EconoRobo models will not have any value at the end of their lives. The Robo100 models are also more energy efficient and it is estimated Mr. Asimov will be able to save a total of $3798 per year in energy costs. Mr. Asimov uses a MARR of 10% to evaluate potential investments.

Using present worth analysis, what is the present worth of the Robo100 system?

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b)

Ms. Child is considering the purchase of a new food packaging system. The system costs $105265. Ms. Child plans to borrow one-third of the purchase price from a bank at 4.5% per year compounded annually. The loan will be repaid using equal, annual payments over a 7-year period. The system is expected to last 15 years and have a salvage value of $21608 at that time. Over the 15 year period, Ms. Child expects to pay $667 per year for maintenance. The system will save $6460 per year because of efficiencies. Ms. Child uses a MARR of 8% to evaluate investments. What is the net present worth of the system?

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Please keep 3 or more decimal places

and use the (p/a,i,n) notaions so I can understand thank you.