Determine the irr of the set of cash flows

Question

Consider the following cash flows:

Year       Cash Flow

0        -$   33,000 

1              13,900 

2              17,800 

3              11,300 

Required:

What is the IRR of the above set of cash flows? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).)