Q1) A replacement analysis is being done for a vacuum seal on a spacecraft. The current seal can be used for 10 more years, or a new one can be purchased and used instead. The new seal would cost $25,000, and there would be an annual $5.000 of maintenance cost. It is estimated the seal could be sold for $7,000 in 10 years. The current seal can be sold now for $9.000 or for $2.000 in 10 years. The required annual maintenance cost is $7.500 Using 10 years for both alternatives and 12% cost of capital, calculate the present worth of both the defender and the challenger and determine whether the seal should be replaced.Q2) Answer the questionA new robot could be acquired for 560,000, and be kept for up to 4 years its annual expenses would be 58.000 $9,000 $14,000, and $20.000 in years 1 to 4 in the same order The robot's market value would be $45,000 533,750, 525,500 and $19.500 at the end of years 1 to in the same order Determine the economic life of the robot, assuming 10% cost of capital.Q3) The Steuben County school district is considering a proposal to upgrade landscaping on the school properties it operates. The time period for the project, once it begins is assumed to be 20 years, and the school district has determined 7% discount rate to be appropriate for this type of project. Based on the data below. compute the conventional - C ratio for the project, using the present worth method. Should the proposal be accepted? Why? The initial cost of purchasing and planting trees and shrubs is expected to be $200,000. Annual maintenance cost is expected to start at $10,000 in year and then Increase by $1,000 each following year. The benefits to the community from the improved landscaping are estimated to be $15.000 a year during the first 10 years, and $30.000 a year during years 11-20. Assume no salvage value and no other additional cash flows at the end of the project in 20 years from the start.Q4) The state of Indiana has decided to implement a new food control system, and is choosing between two competing proposals. Each alternative is expected to provide a functioning flood control system for the next 50 years. Proposal A would result in estimated annual benefits to the public of $400,000 due to increased safety, an initial cost of $2,500,000, an annual maintenance cost of $150,000, and annual disbenefits to the public of $100,000. Proposal 8 would result in estimated annual benefits to the public of $350,000, an initial cost of $2,000,000, an annual maintenance cost of $130,000, and annual disbenefits to the public of $50,000 Use the annual worth method to compute the conventional B-C ratio for each proposal, while including disbenefits in the numerator Determine which proposal should be chosen and explain why. Assume 8% MARR, and no additional cash flows at the end of the 50 year project period.

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