You$$ve borrowed $$20,000$ on margin to buy shares in Apple, which is now selling at $$50$ per share. Your account starts at the initial margin requirement of $80\%.$ The maintenance margin is $25\%.$ Three days later, the stock price of Apple falls to $$40$ per share.

A$.$ Three days later, what is your percentage margin? Will you receive a margin call? $($show your work$)$

B$.$ How low can the price of Apple shares fall before you receive a margin call? $($show your work$)$You$$ve borrowed $$20,000$ on margin to buy shares in Apple, which is now selling at $$50$ per share. Your account starts at the initial margin requirement of $80\%.$ The maintenance margin is $25\%.$ Three days later, the stock price of Apple falls to $$40$ per share.

A$.$ Three days later, what is your percentage margin? Will you receive a margin call? $($show your work$)$

B$.$ How low can the price of Apple shares fall before you receive a margin call? $($show your work$)$