You shorted 160 shares of Blackberry at $30 a share with a required initial margin of 30% and a maintenance margin of 25%.

a) How much money do you initially need to deposit into the account? (1 mark)

b) If Blackberrys stock price dropped to $25 a share. What is your new margin percentage? Round to the nearest whole percentage. (1 mark)

c) If Blackberrys stock price rose to $36 a share. What is your new margin percentage? Round to the nearest whole percentage. (1 mark)

d) How much money do you have to deposit into the account to meet the margin call in part c?