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Determine the rate of return for the cash flows shown in the diagram. (i) Write the equation of the net present worth (PW) of all the transactions. (ii) Determine the rate-of-return (ROR) using the IRR of the Microsoft Excel spreadsheet. Show the trial and error process as well on the spreadsheet. Upload your spreadsheet. (iii) What is the net present worth (PW) at a minimum attractive rate of return (MARR) of 10% per year? (Hint: Substitute MARR =10% into PW equation from part (i) (iv) Is the MARR of 10% per year met or not? Explain your