answer these problems

In looking for ways to cut costs and increase profit (to make the company's stock go up), one of the company's industrial engineers (IEs) de- termined that the equivalent annual worth of an existing machine over its remaining useful life of 3 years will be $-70,000 per year. The IE also determined that a replacement with more ad- vanced features will have an AW of $ 80,000 per year if it is kept for 2 years or less, $-75,000 if it is kept between 3 and 4 years, and $ 65,000 if it is kept for $ to 10 years. If the engineer uses a 3-year study period and an interest rate of 13% per year, she should recommend that the existing machine bbe: [a) Replaced now (5] Replaced I year from now (c) Replaced 2 years from now fa) Notreplaced The equivalent annual worth of an existing ma- chine at American Semiconductor is estimated to be $ 70,000 per year over its remaining useful life of 3 years. It can be replaced now or later with a machine that will have an AW of $ 90,000 per year if it is kept for 2 years or less, -$65,000 if it is kept between 3 and 3 years, and $-110,000 if it is kept for 6 to 8 years. The company wants an analysis of what it should do for a 3-year study period at an interest rate of 15% per year. The re- placement must be made now or 3 years from now, according to the department supervisor. You should recommend that the existing machine be replaced: (a) Now (5) 1 year from now (c) 2 years from now a) Can't tell; must find AW of different reten- tion combinations for the two machines\f\f\f\f