Question: The ABC Corporation has an investment opportunity that costs exist50,000 and 4 years later pays a lump-sum amount of exist63,000. What percent interest rate per year would be earned on this investment. Calculate your answer to the nearest one-tenth of 1%. The ABC Corporation has an investment opportunity that costs exist50,000 and 4 years later pays a lump sum amount of exist63,000. What percent interest rate per year would be earned on this investment. Calculate your answer to the nearest one-tenth of 1%.