:TITLES 1 "PLAN80 EXAMPLE #5" 2 "Internal Rate of Return Model" :COLUMNS P01 P02 P03 P04 P05 P06 P07 P08 P09 P10 P11 P12 :ROWS INVEST "Investment" INCOME "Income" CASHFLOW "Cash Flow" CUMCF "Cumulative" IRRATE (1) "Internal Rate" " of Return (%)" :OPTIONS ROWWID(14) COLWID(5) :DATA INVEST = -400 INCOME = 0 100 (*1.10) :INTERACTIVE :RULES CASHFLOW = INCOME+INVEST CUMCF = @CUM(CASHFLOW) IRRATE = @IRR(CASHFLOW) :DISPLAY