12.4 LO25 MacKillop Lawncare (ML) is about to buy a new fertiliser spreader that will cost $450,000. The new spreader will be usable for 10 years, at which time it will be worthless. ML plans to update to a new model in 5 years when it will be saleable for $80,000. The new spreader will provide a revenue stream of $150,000 per year for its first 4 years of use and $75,000 from year 5. ML depreciates its non-current assets on a straight-line basis. Calculate the accounting rate of return (ARR) of the new equipment. Calculate the payback period for the new equipment. Calculate the net present value (NPV) for the new equipment. Calculate the internal rate of return (IRR) for the new equipment.