If the interest rates go up by 1%, using the duration and convexity rule to determine the net worth of the bank and the equity to asset ratio.

In 1)'s scenario, to maintain the equity to asset ratio at 40% which is required by the regulation, the bank decides to raise cash (zero duration and zero convexity) from the equity holders. How much cash does the bank need to raise?

Please do not use Excel to calculate, I need the calculation process to understand. Thx

Consider a bank with the following balance sheet (M means million): Assets Value Duration of the Asset Convexity of the Asset $550M 4.562 12.026 5yr bond bought at a yield of 3.4% (lending money) $800M 9.453 53.565 12yr bond bought at a yield of 4% (lending money) Liabilities Value Duration of the Liability Convexity of the Liability $300M 1.941 2.384 2yr bond sold at a yield of 2.4% (borrowing money) 4yr bond sold at a yield of 2.8% (borrowing money) $500M 3.759 8.206