a) Sukhjeet Co. wishes to maintain a growth rate of 13% a year, a debt-equity ratio of 1.20, and a dividend payout ratio of 30%. The ratio of total assets to sales is constant at 0.95. What profit margin must the firm achieve? b) Richmond Inc. had equity of $145,000 at the beginning of the year. At the end of the year, the company had total assets of $275,000. During the year, the company sold no new equity. Net income for the year was $26,000 and dividends were $5,500. What is the sustainable growth rate for the company? c) Berkley's bank pays 7% simple interest on its savings account balances, whereas RBC Bank pays 7% interest compounded annually. If you made a $6.000 deposit in each bank, how much more money would you earn from your RBC Bank account at the end of 9 years