6. (6 marks) (For this question you must show your work!) A business is considering investing in specialized equipment costing $280,000. The equipment has a useful life of 5 years and a residual value of $20,000. Depreciation is calculated using the straight-line method. The expected net cash inflows from the investment are: Year 1 $60,000 Year 2 $90,000 Year 3 $110,000 Year 4 $40,000 Year 5 $25,000 Total cash inflows $325,000 Measure the Payback Period for this investment