A simple, direct space heating system is currently being used in a professional medical office complex. An upgraded "variable air-volume system" retrofit can be purchased and installed for RM520,000 and will result in a profit of RM42,000 annually. Research contribution attribute will amount one-off grant saving RM110,000 in fifth year. The equipment requires a minor service overhaul annually that cost RM5,000 per year. At eleventh year, a major overhaul costing RM25,000 will be required. This equipment will have a salvage value of RM95,000 at the end of twentieth year and the MARR =5%. Evaluate whether this project is desirable investment by using the Benefit-Cost Ration (PW). Include the cash flow diagram in your calculation. A simple, direct space heating system is currently being used in a professional medical office complex. An upgraded "variable air-volume system" retrofit can be purchased and installed for RM520,000 and will result in a profit of RM42,000 annually. Research contribution attribute will amount one-off grant saving RM110,000 in fifth year. The equipment requires a minor service overhaul annually that cost RM5,000 per year. At eleventh year, a major overhaul costing RM25,000 will be required. This equipment will have a salvage value of RM95,000 at the end of twentieth year and the MARR =5%. Evaluate whether this project is desirable investment by using the Benefit-Cost Ration (PW). Include the cash flow diagram in your calculation