Bil Campbell invested $5,500 and borrowed $5,500 to purchase shares in Walmart. At the time of investment, Walmart stock was selling for $50 a share. (a) If Bill paid a $31 commission, how many shares could he buy if he used only his own money and did not use margin? (Round answer to 2 decimal places.) your Number of shares (b) If Bill paid a $59 commission, how many shares could he buy if he used his $5,500 and borrowed $5,500 on margin to buy Walmart stock? (Round your answer to 2 decimal places.) Number of shares (c) Assuming Bill did use margin, paid a $96 total commission to sell his Walmart stock, and sold his stock for $53 a share, how much profit did he make on his Walmart investment? (Use the number of shares computed in part (b) rounded to 2 decimal places. Round your final answer to 2 decimal places.) Total profit after commissions