Compute the IRR on the following cash flow streams:

a. An initial investment of $24,570 followed by a single cash flow of $43,290 in year 6. (Round intermediate calculations to 4 decimal places, e.g. 1.2512 and final answer to 2 decimal places, e.g. 15.25%.)

b. An initial investment of $891,059 followed by a single cash flow of $1,395,600 in year 4. (Round intermediate calculations to 4 decimal places, e.g. 1.2512 and final answer to 2 decimal places, e.g. 15.25%.)

c. An initial investment of $2,350,718 followed by cash flows of $1,901,100 and $1,183,400 in years 2 and 4, respectively. (Round answer to 2 decimal places, e.g. 15.25%.)