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A city is planning to renovate their current facility with hi-tech computerized systems. Four plans are proposed by the engineers. Each plan will save $900,000 annually but their cost is different. The benefits will last for 25 years. Based on a benefit-cost analysis what should the agency do, if i=10% ? A city is planning to renovate their current facility with hi-tech computerized systems. Four plans are proposed by the engineers. Each plan will save $900,000 annually but their cost is different. The benefits will last for 25 years. Based on a benefit-cost analysis what should the agency do, if i=10%