Estimate the Internal Rate of Return (IRR) using the following information.

Initial Cash Outflow	-150
Net Year 1	55
Net Year 2	75
Net Year 3	95

NPV=InitialCashFlow+(Year1NetCashFlow/(1+rate)^1)+(Year2NetCashFlow/(1+rate)^2)+(Year1NetCashFlow/(1+rate)^3).......

note that ^ is the spreadsheet notation for "to the power of" and the number used matches the year of the cashflow (e.g. ^1, ^2, ^3, ^4, ^5)