Problem $6$ You've borrowed $$20,000$ on margin to buy shares in Disney. which is now selling at

$$40$ per share. Your account starts at the initial margin requirement of $50\%.$ The maintenance

margin is $35\%.$ Two days later, the stock price falls to $$35$ per share.

a$.$ Will you receive a margin call?

b$.$ How long can the price of Disney shares fall before you receive a margin call?