Which of the following is a prime cost and a conversion cost?

Is the monthly operation cost include the cost of good sold in a small retail business?

1) include 2) not include

Advantage Milling Devices is preparing to buy a new machine for precision milling of special metal alloys. This device can earn $300 per hour, and can run 3,000 hours per year. The machine is expected to be this productive for four years

If the interest rate is 6%, what is the net present value of the annual cash flows? What is the net present value if the interest rate is not 6%, but 9%? Why does present value fall when interest rates rise?