Assume that in 2020 , a Liberty Seated half dollar issued in 1890 was sold for $203,000. What was the rate of return on this investment? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. At 7.75 percent interest, how long does it take to double your money? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16. At 7.75 percent interest, how long does it take to quadruple your money? Note: Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16