Suppose that you have $13,000 in a rather risky investment recommended by your financial advisor. During the first year, your investment decreases by 40% of its original value. During the second year, your investment at the end of year
one increases by 50%. Your advisor tells you that there must have been a 10% overall increase of your original $13,000
investment. Is your financial advisor using percentages properly? If not, what is your actual percent gain or loss of your
original $13,000 investment?