Your company has a five-year project to produce a new line of chairs with revenues (is US$) of 280, 260, 240, 220 and 200 per year. Variable costs are 70% and there are no fixed costs (for simplicity). New equipment needs to be bought at $300, depreciated over a straight line with a salvage value of zero. Tax rate is 30%. Discount rate 8%. Calculate NPV.