Brief Exercise 12-24 (Algo) Given the following attributes of an investment... [LO 12-4] Given the following attributes of an investment project with a 5-year life and an after-tax discount rate of 15%, calculate both the IRR and MIRR of the project: investment outlay, time 0 , $2,800; after-tax cash inflows, year 1,$1,400; year 2,$1,400; year 3,$1,400; year 4 , $1,120; and year 5,$280. Use the appropriate built-in functions in Excel (IRR and MIRR) to estimate both the IRR and the MIRR of the proposed investment. (Round "IRR" and "MIRR" to 2 decimal places. (i.e. 0.1234=12.34% ).)