Slomkowski Corporation is contemplating purchasing equipment that would increase sales revenues by $298,000 per year and cash operating expenses by $143,000 per year. The equipment would cost $712,000 and have a 8 year life with no salvage value. The annual depreciation would be $89,000. The simple rate of return on the investment is closest to:
a. 9.3%
b. 21.8%
c. 22.1%
d. 12.5%