Robben Manufacturing has the following two possible projects. The required return is 12 percent.

Year	Project Y			Project Z
0	$	27,500		$	55,000
1		13,500			19,500
2		11,900			26,000
3		14,300			17,500
4		9,900			24,000

a. What is the profitability index for each project?

b. What is the NPV for each project?

c. Which, if either, of the projects should the company accept?