Miguel Torres purchased 100 shares of CantWin.com.com for $50 per share, using as little of his own

Question:

Miguel Torres purchased 100 shares of CantWin.com.com for $50 per share, using as little of his own money as he could. His broker has a 50% initial margin requirement and a 30% maintenance margin requirement. The price of the stock falls to $30 per share. What does Miguel need to do?

Broker
A broker is someone or something that acts as an intermediary third party, managing transactions between two other entities. A broker is a person or company authorized to buy and sell stocks or other investments. They are the ones responsible for...