R & N wants to expand its brick manufacturing company by adding another project. Therefore, it has four projects to evaluate and chose one that is suitable. The plant for each product can produce 230 000 units a year with different percentages of waste and has no market value, at the end of its useful life of 25 years. The capital invested is expected to earn 9% per year, and the waste is assumed not to influence the annual expenses. Evaluate the projects through calculations and choose the project that maximises all the three equivalent worth measures of overall profitability. Also, perform the preference ranking. The projects are presented in the following Table: Capital Investment Windowsills Floor Tiles Roof Tiles Clay vases R740 000 R884 000 R630 000 R408 000 Total annual expenses R460 000 R430 000 R380 000 R400 000 Selling price R10/unit R25/unit R23/unit R50/unit Waste per year 3% 3% 0.5% 0.3%