2. For the cash flow series below Check for multiple rates of return based on Descartes' and Norstrom's rules Calculate the external rate of return, using the modified rate of return (MIRR) with an investment rate of 10% and finance/borrowing rate of 15%. Calculate the external rate of return, using the return on invested capital (ROIC) approach with an investment rate of 10% per year If MARR is 15%, what can you conclude from this cash flow? a. b. C. d. Year Cash Flow,$ 3000 -2000 1000 -6000 3800 2. For the cash flow series below Check for multiple rates of return based on Descartes' and Norstrom's rules Calculate the external rate of return, using the modified rate of return (MIRR) with an investment rate of 10% and finance/borrowing rate of 15%. Calculate the external rate of return, using the return on invested capital (ROIC) approach with an investment rate of 10% per year If MARR is 15%, what can you conclude from this cash flow? a. b. C. d. Year Cash Flow,$ 3000 -2000 1000 -6000 3800