$10.$ You had $$3,000$ cash deposit in the margin account. You borrowed $200$ shares of Doggie Treats Inc. stock from the broker and sold them at $$25$ per share. The broker requires a $25\%$ maintenance margin. At the end of the year, Doggie Treats Ine. will pay a year$-$end dividend of $$0\mathrm{.}5$ per share$\mathrm{.}1)$ If stock price drops to $$20$ next year after the dividend payment, what will be the return rate of your deposited money? $(6$ points$)2)$ After the year$-$end dividend payment, at what stock price will you get a margin call for the $25\%$ maintenance margin? $(6$ points$)3)$ At what stock price in next year $($after dividend payment$)$ will the return rate be $20\%$ on your own money deposit? Hint: how much is your