Question in accounting

Booth Company wants to buy a numerically controlled (NC) machine to be used in producing specially machined parts for manufacturers of tractors. The outlay required is $960,000. The NC equipment will last 5 years with no expected salvage value. The expected after-tax cash flows associated with the project follow: Year Cash Revenues Cash Expenses $1,275,000 $900,000 2 $1,275,000 $900,000 3 $1,275,000 $900,000 4 $1,275,000 $900,000 5 $1,275,000 $900,000 1: Compute the payback period for the NC equipment. 2: Compute the NC equipment's ARR. 3: Compute the investments NPV, assuming a required rate of return of 10%. 4: Compute the investments IRR