A large food-processing company is considering using laser technology to speed up and eliminate waste in the potato-peeling process. To implement the system, the company anticipates that it needs RM3 million to purchase the industrial-strength lasers. The system will save RM1,200,000 per year in labour and materials. However, it will incur an additional operating and maintenance cost of RM250,000 per year. Annual income taxes will also increase to RM150,000. The system is expected to have 10 years of service life and salvage value of about RM200,000. If the company's MARR is 18%: a) Justify the economics of the project using the NPW method. (4 marks) b) What is the actual return (IRR) for the project? Use trial and error, then linear interpolation. (8 marks) c) Calculate the discounted payback period for the purchase. (8 marks)