D$$e Trader opens a brokerage account and purchases $400$ shares of Internet Dreams at $$20$ per share. She borrows $$2,500$ from her broker to help pay for the purchase. The interest rate on the loan is $7\%.$

Required:

What is the margin in D$$e$$s account when she first purchases the stock?

If the share price falls to $$10$ per share by the end of the year, what is the remaining margin in her account?

If the maintenance margin requirement is $30\%,$ will she receive a margin call?

multiple choice

Yes

No

What is the rate of return on her investment?

Note: Negative value should be indicated by a minus sign. Round your answer to $2$ decimal places.