Develop an Excel spread sheet for the following problems. Calculate the Present Value Net Benefits (PVNB), the Benefit-to-Cost and Savings-to-Investment Ratios (BCR and SIR) of each. State whether these projects are economic or not. consider all benefits, profits ...etc to be positive and ad costs, investments ...etc to be negative. A factory expansion project has the following data: Initial Cost of expansion = $1, 500,000 Annual costs for operation = $65,000 Annual added profit from the expansion = $225,000 Resale value = $300,000 Useful life of investment = 30 years Interest rate = 8%