please solve all parts

3) You decided to buy 100 shares of ABC stock at $60 per share on margin. The initial margin is 60% and the maintenance margin is 35%. The call money rate is 5% a year. The stock pays no dividend. a) How much is the total purchase? b) How much is the borrowed amount with the initial margin? c) One year later, the stock price increases to $68, what's the new margin % level? e) How much interest expense you will pay for the one year? 1) What's your net profit on the purchase