A company issued a five-year bond at Rs 970 two years ago. The bond pays a semi-annual coupon at 8 percent per year. The face value of the bond is Rs 1000, and it currently offers a 10 percent yield to maturity. a. How much gain or loss per bond will you experience in your investment value if the bond yield drops by fifty basis points (use the duration approach)? b. Use the convexity measure and prepare a table showing the gain/loss for the following yield changes: +125 bps, -150 bps (ignore semi-annual convexity adjustment).