In 1913, Andrew Carnegie's net worth was approximately $475 million. In 2015, Warren Buffett’s net worth was $64.7 billion. Which of the two was/is really wealthier? Show your work. a) One dollar ($1) in 1913 has the same buying power as how many dollars in 2015? b) Calculate the real wealth for Andrew Carnegie. c) Calculate the real wealth for Warren Buffett. d) Who is the wealthier of the two and why?