up end Chapter 6: Measuring and Evaluating the Performance of Banks and Their Principal Competitors 8. a)Mathematically prove the following ROE (Net Income/Pre-tax net operating income) X (Pre-tax net operating income/Total operating revenue) x (Total Operating Revenue/Total Assets) X (rotal Assets/Total Equity Capital)--equation (0 [Speint b) Suppose The Leonard Banka.CB) has the following ratio:[20paints 0.107 0.60 X 0.03 X 0.40 X 17.75; where the tato correspond to equation (1) and are in order as in equation And, International Bank of Commercc IBC) has the following ratios; where the number correspond to equation and are in as in equation ( 0.107 0.65 X 0.04 X 0.45 X 9.11 i. Who is managing sales better? What ratio tells us this-write down the ratio. i. Who is managing expense better? What ratio tells us this-write down the ratio. ii. Which bank is more risky? What ratio tells us this-write down the ratio. iv. Who is managing tax better? What ratio tells us this-write down the ratio