(Ignore income taxes in this problem.) The Jackson Company has invested in a machine that cost $90,000, that has a useful life of nine years, and that has no salvage value at the end of its useful life. The machine is being depreciated by the straight-line method, based on its useful life. It will have a payback period of six years. Given these data, the simple rate of return on the machine is closest to (Round your intermediate calculations to the nearest dollar amount):