An investor lends 1,100 and received a payment of 500 at the end of year 1 and 700 at the end of year 2. Find the IRR.

Using the same method as above, find the IRR if an investor lends 11000 and receives 4000 at the end of the year 1, 5,000 at the end of year 2 and 4,500 at ur end of year 3.