Compute each projects payback period? Compute the net present value of each project?

Carla Vista's Custom Construction Company is considering three new projects, each requiring an equipment investment of $23,980. Each project will last for 3 years and produce the following net annual cash flows. Year AA BB $7,630 $ 10,900 $14,170 NO 9,810 10,900 13,080 W 13,080 10,900 11,990 Total $30,520 $32,700 $39,240 The equipment's salvage value is zero, and Carla Vista uses straight-line depreciation. Carla Vista will not accept any project with a cash payback period over 2 years. Carla Vista's required rate of return is 12%. Click here to view PV table