An agricultural corporation that paid 53% in income tax wanted to build a grain elevator designed to last twenty-five (25) years at a cost of $80,000 with no salvage value. Annual income generated would be $22,500 and annual expenditures were to be $12,000. Answer the question using a straight line depreciation and a 10% interest rate. How many years will it take to earn $400 in interest on $800 at 4% compounded annually?

10 years

11 years

12 years

13 years