Q1 :A company wants to buy a new machine at a price of 6075 d, and an expected annual return of 2000, The life span of this machine is 4 years, and its value is zero upon the end of the investment, noting that the price of The expected return is 10, what is the internal rate of return equal to? Answer: 12% How is the solution method?

Q2: A company wants to buy a new machine at a price of 6075 d, and an expected annual return of 2000, The life span of this machine is 4 years, and its value is zero upon the end of the investment The expected return price is 10%, then the investment cost is equal to? The answer is 6075. I want the solution.