Mario Brothers, a game manufacturer, has a new idea for an adventure game. It can market the game as a traditional board game or as an interactive CD-ROM, but not both. Consider the following cash flows of the two mutually exclusive projects for Mario Brothers. Assume the discount rate for Mario Brothers is 10 percent.

Year	Board Game			CD-ROM
0	$	850		$	2,000
1		620			1,400
2		550			1,050
3		140			450

a.	What is the payback period for each project? (Do not round intermediate calculations and round your final answers to 2 decimal places (e.g., 32.16).)

	Payback period
Board game	years
CD-ROM	years

b.	What is the NPV for each project? (Do not round intermediate calculations and round your final answers to 2 decimal places (e.g., 32.16).)

	NPV
Board game	$
CD-ROM	$

c.	What is the IRR for each project? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places (e.g., 32.16).)

	IRR
Board game	%
CD-ROM	%

d.	What is the incremental IRR? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places (e.g., 32.16).)

Incremental IRR

%