Surveyors estimate a volume of 6.000m of tailings dump mineral commodity to be extracted on an annual production rate of 5,000 tonnes. The project variables are given in the table below; GR Parameter Value Taxation rate 35% Mineral royalty on revenue 6% Commodity selling price $40/onne Operational costs 30% of total sales value Tonnage factor 2.5 tonnes/m Discount rate 10% Depreciation on Straight Line Method (SLM) (1 tol Required: (a) Estimate the project life [3] (b) Determine value for annual Net Operating Cash Flow [10] (c) Calculate the Net Present Value (NPV) and comment on the viability of this project if capital expenditure is $180,000 [5] (d) Compute the profitability index (PI) [2] 2