Consider two projects, Project X and Project Y, with the following cash flows. Calculate the NPV difference using the WACC of 8%.

Cash Flow	Project X	Project Y
Year 0	-$25,000	-$60,000
Year 1	$12,000	$20,000
Year 2	$18,000	$25,000
Year 3	$15,000	$18,000
Year 4	$10,000	$15,000

Requirements:

1. Calculate NPV for each project.
2. Find the IRR for each project.
3. Determine the profitability index for each project.
4. Evaluate which project is more beneficial based on NPV and IRR.