You have borrowed $45,000 on margin to buy shares in Tencent, which is now selling at $120 per share. Your account starts at the initial margin requirement of 50%. The maintenance margin is 30%. Two...

You have borrowed $45,000 on margin to buy shares in Tencent, which is now selling at $120 per share.  Your account starts at the initial margin requirement of 50%.  The maintenance margin is 30%.  Two days later, the stock price falls to $105 per share.

a. What is the current margin and will you recieve a margin call?

b. How low can the price of Baidu shares fall before you recieve a margin call?