please help me with the following problem

14. (5 marks). The loan rate is 5%. Securities rate is 4%, HQLA (i.e. high quality liquid assets) rate is 2%, the deposit rate is 1%, the interbank rate is 0.5%. The cost-to-asset ratio is 2.5%. The bank return on equity (i.e., ROE) in this example is 18.5%. Bank Asset Liability Loans 500 Deposit 800 Securities 400 Short-term (interbank) 150 HQLA (cash, Sovereign) 100 EQUITY 50 Total Assets TA 1000 Liabilities plus equity 1000 What is the effect of halving all interest rates on the ROE? In the box below, please you're your calculation and explain briefly why