Engineering Economy 7th Edition by Leland Blank ,Anthony Tarquin

تمرين 11

Five years ago, an industrial engineer deposited $10,000 into an account and left it undisturbed until now. The account is now worth $25,000.
a) What was the overall ROR during the 5 years
b) If the inflation over that period was 4% per year, what was the real ROR
c) What is the buying power of the $25,000 now compared to the buying power 5 years ago