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Suppose that you ave the manager of a bank whose $100 billon of assess have an average duration of four years and whose 590 bilion of liablises have an avornge turation of sik yeses. Condust a duretion analysis for the bank, and show what will happen to the ret worth of the bank if intarest rales riso by 2 percentage points Asaets fall in value by $ balion. (Round your response to the nearest whote number)