Here are the cash flows for two mutually exclusive projects:

Project	C0				C1				C2				C3
A	$	27,200			+$	10,800			+$	10,800			+$	10,800
B		27,200				0				0			+	34,200

a. Given the following interest rates (0%, 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18%, 20%), above what interest rates would you prefer project A to B?

b. What is the IRR of each project? (Round your answers to 2 decimal places.)