Can someone walk me through this problem?

Dougs Custom Construction Company is considering three new projects, each requiring an equipment investment of $27,280. Each project will last for 3 years and produce the following net annual cash flows.

Year		AA		BB		CC
1		$8,680		$12,400		$16,120
2		11,160		12,400		14,880
3		14,880		12,400		13,640
Total		$34,720		$37,200		$44,640

The equipments salvage value is zero, and Doug uses straight-line depreciation. Doug will not accept any project with a cash payback period over 2 years. Dougs required rate of return is 12%. Click here to view PV table.

Doug's Custom Construction Company is considering three new projects, each requiring an equipment investment of $27,280. Each project will last for 3 years and produce the following net annual cash flows Year $8,680 $12,400 16,120 11,160 12,400 14,880 14,880 12,400 13,640 Total $34,720 $37,200 $44,640 2 The equipment's salvage value is zero, and Doug uses straight-line depreciation. Doug will not accept any project with a cash payback period over 2 years. Doug's required rate of return is 12%. Click here to view PV table. Compute each project's payback period. (Round answers to 2 decimal places, e.g. 15.25.) 8,680 years years years Which is the most desirable project? The most desirable project based on payback period is Project AA Project BB Project Cc Which is the least desirable project? The least desirable project based on payback period is Compute the net present value of each project. (Enter negative amounts using either a negative sign preceding the number e.g.-45 or parentheses e.g. (45), Round final answers to the nearest whole dollar, e.g. 5,275. For calculation purposes, use 5 decimal places as displayed in the factor table provided.) Which is the most desirable project based on net present value? The most desirable project based on net present value is Which is the least desirable project based on net present value? The least desirable project based on net present value is