They forecast:

At $t=0$ it will cost them $$300$ to buy the land

At $t=1$ it will cost them $$500$ to develop

At $t=2$ they will sell it for $$1000$

Each time period is a year.

Find the IRR of this project. Write the answer as a percent so for example $2\mathrm{.}5\%$ should be written as $2\mathrm{.}5,$ not as $0\mathrm{.}025$