A small company purchased now for 1.15M will lose 75,000 each year for the first 4 years. An additional P400,000 invested in the company during the 4th year will result in a profit of 27,500 from the...

A small company purchased now for 1.15M will lose 75,000 each year for the first 4 years. An additional P400,000 invested in the company during the 4th year will result in a profit of 27,500 from the 5th year through the 15th year. At the end of 15 years, the company can be sold for 1.65M.
a. Determine the IRR.

b. Calculate FW if MARR is 12%/year.
c. Calculate ERR ϵ = 12% per year.

Not in excel