Answer:
Account's Equity:
Investment in ABC = $4,000 ($40 x 100)
This is made up of initial investment of $3,000 and Unrealized Gain of $1,000 ($10 x 100) for the appreciation in market value.
Explanation:
The account's equity is the share in ownership rights of the customer in the margin account. Â According to investopedia.com, "A margin account is a brokerage account in which the broker lends the customer cash to purchase stocks or other financial products. Â The loan in the account is collateralized by the securities purchased and cash, and comes with a periodic interest rate."