Modern Artifacts can produce keepsakes that will be sold for $80 each. Non-depreciation fixed costs is $1000 a year and variable costs are $60 per unit. a. If the project requires an initial investment of $4000 and is expected to last for 5 years and the firm pays no taxes. The Initial investment will be depreciated straight line over 5 years to a final value of zero and the discount rate is 10%. What are the accounting and economic break-even levels of sales?