Final answer:
To fully hedge the interest, 500 futures contracts are required.
Step-by-step explanation:
To calculate the number of futures contracts required to fully hedge the interest, we need to determine the duration of the bonds.
Duration is a measure of the sensitivity of a bond's price to changes in interest rates. It tells us how much the price of the bond will change for a one-percentage-point change in interest rates.
In this case, the bonds have a duration of 8.17. To fully hedge the interest, we need to match the duration of the futures contracts to the duration of the bonds. Each futures contract covers $100,000 of bonds, so we divide the total value of the bonds ($50 million) by the contract size to get the number of contracts required:
Number of contracts = bond value / contract size = $50,000,000 / $100,000 = 500 contracts.