QUESTION $15$

The actual cost of a material is $$2\mathrm{.}33$ per produced unit. A Six sigma team develop a productivity project that reduce the cost to $$2\mathrm{.}20$ per produced unit. The total production is $19671$ units in a year. The proiect required a new equipment with a cost of $$3946.$ Without depreciation and learning curve, determine the IRR of the investment. Use two decimal points.