Answer:
14.06%
Step-by-step explanation:
Assume their is a cash out flow today of $100000, and next four year annual cash inflow of 10000 and 120000 at the end of year 4.
We can use IRR formula to find the interest rate.
year cashflow
0 -100000
1 10000
2 10000
3 10000
4 130000
IRR 14.06%
The calculation has been done on excel sheet