Two projects have the estimated details as shown in Table 2.2. Construct cash flow diagrams for the two projects and use present worth (PW) analysis to determine which project should be selected at the rate of 12% per year. Table 2.2: Details for Project R and Project S Project R Project S Initial cost (RM) 30,000 20,000 Annual cost (RM) 7,000 for first year, O for the first 3 year, increasing by 1,000 per year 5,000 from year 4 to year 7 for subsequent years 1,000 for year 8 Special maintenance o 5.000 every 2 year (RM) One-off maintenance 3,000 in year 3 0 (RM) Yearly income (RM) 8,500 7500 Salvage Value (RM) 4.000 0 Life (years) 4 8