P3-11. Robert Williams is considering an offer to sell his medical practice, allowing him to retire five years early. He has been offered $500,000 for his practice and can invest this amount in an account earning 10 % per year. If the practice is expected to generate the following cash flows, should Robert accept this offer and retire now? End of Year Cash Flow $150,000 150,000 125,000 125,000 100,000