An investor bought a $8,500 bond with a coupon rate of 5.6% compounded semi-annually. At the time of purchase, the bond had a yield rate of 4.8% and nine years until maturity. Three years later, the investor sold the bond when the yield to maturity was 5.9%.

a. At what price did the investor purchase the bond?

b. At what price did the investor sell the bond?

c. What was the investor's capital gain or loss on the investment?