Consider the following cash flow profile and assume MARR is 10%/yr. Determine the IRR(s) for this project. Is this project economically attractive? When we worked out homework problem 6.32 with three (multiple internal rates of return); 9.82%, 25.67%, and 57.45%, if the MARK was 10% it was not economically attractive, but at a MARR of 30% it would be economically attractive. A typical rule of thumb is that the higher the MARR the more likely the project will not be economically attractive. Explain why the result from 6.32 as stated above is not supported by this typical rule of thumb