Why the simultaneous targeting of the money supply and interest rates is sometimes impossible to achieve? how central banks intervene in foreign exchange markets? what the bretton woods agreement did to the ability of foreign exchange rates to fluctuate freely?

Last year ann arbor corp had $155,000 of assets, $305,000 of sales, $20,000 of net income, and a debt-to-total-assets ratio of 37.5%. the new cfo believes a new computer program will enable it to reduce costs and thus raise net income to $33,000. assets, sales, and the debt ratio would not be affected. by how much would the cost reduction improve the roe? a. 11.51%b. 12.11%c. 12.75%d. 13.42%e. 14.09%