An investor puts up $5,000 but borrows an equal amount of money from their broker to double the amount invested to $10,000. The broker charges 7% on…

An investor puts up $5,000 but borrows an equal amount of money from their broker to double the amount invested to $10,000. The broker charges 7% on the loan. The stock was originally purchased at $25 per share and in one year the investor sells the stock for $28. The investor’s rate of return was ____.