"A firm is considering purchasing a computer system.

-Cost of system is $144,000. The firm will pay for the computer system in year 0.

-Project life: 5 years

-Salvage value in year 0 (constant) dollars: $11,000

-Depreciation method: five-years MACRS

-Marginal income-tax rate = 39% (remains constant over time)

-Annual revenue = $144,000 (year-0 constant dollars)

-Annual expenses (not including depreciation) = $89,000 (year-0 constant dollars)

If the general inflation rate is 2.8% during the project period (which will affect all revenues, expenses, and the salvage value but not depreciation), determine the INFLATION-FREE IRR' of the computer system. Enter your answer as a percentage between 0 and 100."